Trust

Maintenance Window:

Start time is May 21, 9:00 am PDT (May 21, 16:00 UTC)

End time is May 21, 2:00 pm PDT (May 21, 21:00 UTC)

Scheduled Maintenance Extended - CHI - zscalerthree.net

Wed, 20 May 2026 04:01:06 GMT

The Zscaler Site Reliability Engineering team will be extending the scheduled maintenance for CHI DCs by two hours. As part of our standard maintenance process, all logs will be collected and available after maintenance has been completed. Please contact Zscaler Support if you have additional questions.

Latest Update - Wed, 20 May 2026 06:41:30 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Update - Wed, 20 May 2026 05:03:49 UTC

The team will be extending the scheduled maintenance for CHI DCs by one hour.

Update - Wed, 20 May 2026 06:41:30 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Urgent Maintenance - zscalertwo.net

Wed, 20 May 2026 00:02:20 GMT

The Zscaler Site Reliability Engineering team will be performing an urgent maintenance on zscalertwo.net cloud. This maintenance is scheduled for Tuesday at 6:00 PM Pacific Time on May 19, 2026 (Wednesday, May 20, 2026 01:00 AM UTC), and can take up to 30 minutes to complete. During the maintenance, the ZIA Admin Portal, and access to policy management will not be available. A brief impact to new user authentication might occur. However, all the logs that are collected during this period will be available after the maintenance ends. Please contact Zscaler Support if you have additional questions.

Update - Wed, 20 May 2026 01:39:43 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Scheduled Maintenance Extended - LON, HKG - zscalertwo.net, zscalerthree.net

Tue, 19 May 2026 22:21:45 GMT

The Zscaler Site Reliability Engineering team will be extending the scheduled maintenance for LON and HKG DCs by an hour. As part of our standard maintenance process, all logs will be collected and available after maintenance has been completed. Please contact Zscaler Support if you have additional questions.

Update - Tue, 19 May 2026 23:13:07 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Tokyo V (TYO5) Datacenter Network Maintenance - zscloud.net

Tue, 19 May 2026 10:53:27 GMT

Zscaler will be performing hardware maintenance in Tokyo V (TYO5) Datacenter.

Maintenance window:
Start: 2026-05-20 11:00 UTC
End: 2026-05-20 14:00 UTC
(Local Time 2026-05-20 20:00 - 2026-05-20 23:00 JST)

Update - Wed, 20 May 2026 12:48:09 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Upcoming New Data Centers and Expansions - zscaler.net, zscalertwo.net, zscloud.net, zscalerthree.net, private.zscaler.com, zpatwo.net

Tue, 19 May 2026 04:32:17 GMT

Dear Zscaler Customer,

In accordance with Zscaler Service Continuity Policy and per email notification sent on May 15, 2026, we would like to notify you of the upcoming new data centers and expansions at the locations listed below. These would be available anytime on or after July 14, 2026; 60 days or more from the date the first email notification is sent.

Please update your firewall policy rules and any upstream Access Control Lists (ACLs) to allow the new IP address ranges to avoid any service disruption.

Region	Location	CIDR	Notes
Americas	Toronto III	137.31.56.0/23	Expansion of existing data center
Americas	Honolulu I	137.31.80.0/21	New data center
Americas	Honolulu I	137.31.88.0/23	New data center
Americas	Honolulu I	2605:4300:3d00::/40	New data center
APAC	Beijing III	220.243.158.0/24	Expansion of existing data center
APAC	Tokyo VI	137.31.64.0/20	New data center
APAC	Tokyo VI	2400:7aa0:2f00::/40	New data center

We recommend that you add the IP address ranges listed in the ‘Zscaler Aggregate IP Address Ranges’ section of the CENR pages (refer applicable links below) to your access lists, firewalls, and application allow lists to avoid service disruption. The IPs from these ranges can be put in use by Zscaler for Web and Internet Application communication and dynamic service resolution.

For more information, please visit:

If you have any questions, please contact Zscaler Support via the “Support” link on the Zscaler Administration U.I. or contact us by phone:

USA Toll Free: +1-844-971-0010

Global Direct: +1-408-752-5885

Miami IV Data Center online - zscaler.net, zscalertwo.net, zscloud.net, zscalerthree.net

Mon, 18 May 2026 21:23:18 GMT

Dear Zscaler Customer,

You are receiving this notice in accordance with the Zscaler Service Continuity Policy.

As part of our effort to enhance our Security Cloud’s robustness and performance, Zscaler will be bringing online a new Miami IV (MIA4) data center. This facility will be added to the public resolution service (Auto Geo Proximity) on May 19, 2026

What if I have more questions?

Contact Zscaler Support via the “Support” link at the top-right of the Zscaler Administration U.I page.

Or contact us by phone:

USA Toll-Free: +1-844-971-0010

Global Direct: +1-408-752-5885

Update - Wed, 20 May 2026 02:43:11 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Reminder Notification for Upcoming New DCs and Expansions - zscaler.net, zscalertwo.net, zscloud.net, zscalerthree.net, private.zscaler.com, zpatwo.net

Mon, 18 May 2026 18:47:47 GMT

Dear Customer,

In accordance with the Zscaler Service Continuity Policy and as previously announced via email notification and Trust on April 1st, 2026, we would like to remind you of the upcoming New DCs and expansions at the locations listed below. These would be available anytime on or after May 31, 2026

Please update your firewall policy rules and any upstream access lists to allow the new IP address ranges to avoid any service disruption.

Region	Location	CIDR	Notes
Americas	Montreal I	198.14.104.0/23	Expansion of existing data center
Americas	Seattle	198.14.106.0/23	Expansion of existing data center
Americas	Vancouver I	137.31.24.0/23	Expansion of existing data center
Americas	Vancouver I	137.31.26.0/23	Expansion of existing data center
EMEA	Amsterdam Il	137.31.28.0/23	Expansion of existing data center
EMEA	Amsterdam Il	137.31.30.0/23	Expansion of existing data center
EMEA	Zurich	137.31.20.0/23	Expansion of existing data center
EMEA	Zurich	137.31.22.0/23	Expansion of existing data center
APAC	Jakarta I	122.10.149.0/24	New RS* data center

*RS - Regional Surcharge (An additional subscription is required to use these data centers)

We recommend that you add the IP address ranges listed in the ‘Zscaler Aggregate IP Address Ranges’ section of the CENR page to your access lists, firewalls, and application allowlists to avoid service disruption. The IPs from these ranges can be put in use by Zscaler for Web and Internet Application communication and dynamic service resolution.

For more information, please visit:

https://config.zscaler.com/zpatwo.net/zpa

If you have any questions, please contact Zscaler Support via the “Support” link on the Zscaler Administration U.I. or contact us by phone:

USA Toll Free: +1-844-971-0010

Global Direct: +1-408-752-5885

Melbourne II Datacenter Scheduled Maintenance - IPv6 Enablement - zscaler.net, zscalertwo.net, zscloud.net

Mon, 18 May 2026 16:48:53 GMT

Zscaler will be enabling IPv6 at our Melbourne II (MEL2) Data Center. During the maintenance window the services through MEL2 Data Center will be restarted in phases to minimize the service impact.

Other Zscaler sites and Zscaler Services will continue to operate normally.

Maintenance Window:

Start time is May 21, 7:00 am PDT (May 21, 14:00 UTC)

End time is May 21, 2:00 pm PDT (May 21, 21:00 UTC)

Warsaw II Datacenter Scheduled Maintenance - Service Expansion - zscaler.net, zscloud.net

Mon, 18 May 2026 16:39:05 GMT

Zscaler will be expanding its global data center footprint and performing maintenance at our Warsaw II (WAW2) data center. We expect minimal to no impact to services during the maintenance window.

Please update your firewall policy rules and any upstream Access Control Lists to allow all IP addresses for this DC

For more information, please visit:

Maintenance Window:

Start time is May 20, 9:00 am PDT (May 20, 16:00 UTC)

End time is May 20, 5:00 pm PDT (May 21, 00:00 UTC)

Update 5/20: Extending Maintenance

Update - Thu, 21 May 2026 05:29:54 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Madrid IV (MAD4) Datacenter Network Maintenance - zscalertwo.net

Mon, 18 May 2026 14:59:14 GMT

Zscaler will be performing hardware maintenance in Madrid IV (MAD4) Datacenter.

Maintenance window:
Start: 2026-05-19 18:00 UTC
End: 2026-05-19 21:00 UTC
(Local Time 2026-05-19 20:00 - 2026-05-19 23:00 CEST)

Update - Tue, 19 May 2026 21:01:52 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Madrid IV (MAD4) Datacenter Network Maintenance - zscloud.net

Mon, 18 May 2026 07:11:59 GMT

Zscaler will be performing hardware maintenance in the Madrid IV (MAD4) Datacenter.

Maintenance window,
Start: 2026-05-19 16:00 UTC
End: 2026-05-19 19:00 UTC
(i.e. 2026-05-19 18:00 - 21:00 Local Time)

Update - Tue, 19 May 2026 18:49:58 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Urgent Maintenance - zdxcloud.net

Sun, 17 May 2026 03:00:03 GMT

The Zscaler SRE team will be performing an urgent maintenance on the zdxcloud.net cloud. This maintenance is scheduled for Sunday at 03:15 AM UTC on 17th May, 2026, and can take up to 2 Hours to complete. During this maintenance window the ZDX Admin Portal, including policy management, reporting access, and authentication of new users will not be available. As part of our standard maintenance process all logs will be collected and available after maintenance has completed.

We will continue to provide updates here as the investigation progresses. For detailed updates, please check the Service Status section in your Zscaler customer support portal (CSP). Status changes and additional details will be posted there as they become available.

Update - Sun, 17 May 2026 04:07:31 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Urgent Maintenance on AMER Region - zscaler.net

Sat, 16 May 2026 05:48:01 GMT

The Zscaler Site Reliability Engineering team will be performing an urgent maintenance on AMER Region on the zscaler.net cloud. This maintenance can take up to 3 hours to complete. We expect minimal to no impact to services during the maintenance window. All logs will be collected and available after maintenance is complete.

We will continue to provide updates here as the investigation progresses. For detailed updates, please check the Service Status section in your Zscaler customer support portal (CSP). Status changes and additional details will be posted there as they become available.

Update - Sat, 16 May 2026 09:09:25 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Urgent Maintenance - zdxcloud.net

Sat, 16 May 2026 04:39:28 GMT

The Zscaler SRE team will be performing an urgent maintenance on the zdxcloud.net cloud. This maintenance is scheduled for Saturday at 04:40 AM UTC on 16th May, 2026, and can take up to 2 Hours to complete. During this maintenance window the ZDX Admin Portal, including policy management, reporting access, and authentication of new users will not be available. As part of our standard maintenance process all logs will be collected and available after maintenance has completed.

Update - Sat, 16 May 2026 05:56:10 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Helsinki I Datacenter Scheduled Maintenance - IPv6 Enablement - zscaler.net, zscalertwo.net, zscalerthree.net

Fri, 15 May 2026 18:56:06 GMT

Zscaler will be enabling IPv6 at our Helsinki I (HEL1) Data Center. During the maintenance window the services through HEL1 Data Center will be restarted in phases to minimize the service impact.

Other Zscaler sites and Zscaler Services will continue to operate normally.

Maintenance Window:

Start time is May 22, 9:00 am PDT (May 22, 16:00 UTC)

End time is May 22, 2:00 pm PDT (May 22, 21:00 UTC)

Helsinki I Datacenter Scheduled Maintenance - Service Expansion - zscloud.net

Fri, 15 May 2026 18:54:27 GMT

Zscaler will be expanding its global data center footprint and performing maintenance at our Helsinki I (HEL1) data center. We expect minimal to no impact to services during the maintenance window.

Please update your firewall policy rules and any upstream Access Control Lists to allow all IP addresses for this DC

For more information, please visit:

Maintenance Window:

Start time is May 22, 9:00 am PDT (May 22, 16:00 UTC)

End time is May 22, 2:00 pm PDT (May 22, 21:00 UTC)

Hong Kong III Datacenter Scheduled Maintenance – IPv6 Enablement - zscaler.net, zscloud.net

Fri, 15 May 2026 18:39:20 GMT

Zscaler will perform scheduled maintenance at our Hong Kong III (HKG3) Data Center to complete preparatory work for future IPv6 enablement.

During the maintenance window, services through the HKG3 Data Center may be restarted in phases to minimize impact.

Other Zscaler sites and services will continue to operate normally.

Maintenance Window:

Start time is May 20, 9:00 am PDT (May 20, 16:00 UTC)

End time is May 20, 4:00 pm PDT (May 20, 23:00 UTC)

Update - Wed, 20 May 2026 21:19:17 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Capetown IV Datacenter Scheduled Maintenance - IPv6 Enablement - zscaler.net, zscalerone.net, zscalertwo.net, zscloud.net, zscalerthree.net

Fri, 15 May 2026 18:10:32 GMT

Zscaler will be enabling IPv6 at our Capetown IV (CPT4) Data Center. During the maintenance window the services through CPT4 Data Center will be restarted in phases to minimize the service impact.

Other Zscaler sites and Zscaler Services will continue to operate normally.

Maintenance Window:

Start time is May 19, 9:00 am PDT (May 19, 16:00 UTC)

End time is May 19, 6:00 pm PDT (May 20, 1:00 UTC)

Update 5/19: Extending Maintenance
Update 5/19: Correcting time

Update - Wed, 20 May 2026 01:08:59 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Mexico City I Datacenter Scheduled Maintenance - IPv6 Enablement - zscaler.net, zscalertwo.net, zscloud.net, zscalerthree.net

Fri, 15 May 2026 17:52:49 GMT

Zscaler will be enabling IPv6 at our Mexico City I (MEX1) Data Center. During the maintenance window the services through MEX1 Data Center will be restarted in phases to minimize the service impact.

Other Zscaler sites and Zscaler Services will continue to operate normally.

Maintenance Window:

Start time is May 18, 6:00 pm PDT (May 19, 1:00 UTC)

End time is May 18, 11:00 pm PDT (May 19, 6:00 UTC)

Scheduled Maintenance Extended - EMEA Region - zscloud.net

Thu, 14 May 2026 22:53:36 GMT

The Zscaler Site Reliability Engineering team will be extending the scheduled maintenance of the EMEA region's datacenters on zscloud.net cloud by 3 hours. During this extended maintenance window the ZIA Admin Portal, including policy management and reporting access, and new user authentication should be successful. As part of our standard maintenance process, all logs will be collected and available after maintenance has been completed.

Update - Fri, 15 May 2026 01:25:55 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Urgent Maintenance - zscalerone.net

Thu, 14 May 2026 19:34:53 GMT

The Zscaler Site Reliability Engineering team will be performing an urgent maintenance on zscalerone.net cloud. This maintenance is scheduled for Friday at 01:00 AM Pacific Time on May 15, 2026 (Friday, May 15, 2026 08:00 AM UTC), and can take up to 4 hours to complete.

Update - Fri, 15 May 2026 10:12:19 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Chicago I (CHI1) Datacenter Network Maintenance - zscaler.net, zscalerone.net, zscalertwo.net, zscalerthree.net, zpabeta.net

Thu, 14 May 2026 05:06:33 GMT

Zscaler will be performing hardware maintenance in Chicago I (CHI1) Datacenter Datacenter.

Scheduled Maintenance window,
Start: 2026-05-15 23:00 UTC
End: 2026-05-16 01:00 UTC
(Local Time 2026-05-15 18:00 - 2026-05-15 20:00)

Update - Mon, 18 May 2026 05:49:04 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Urgent Maintenance - zdxcloud.net

Thu, 14 May 2026 02:39:29 GMT

The Zscaler SRE team will be performing an urgent maintenance on the zdxcloud.net cloud. This maintenance is scheduled for Thursday at 03:00 AM UTC on 14th May, 2026, and can take up to 2 hour to complete. During this maintenance window the ZDX Admin Portal, including policy management, reporting access, and authentication of new users will not be available. As part of our standard maintenance process all logs will be collected and available after maintenance has completed.

Update - Thu, 14 May 2026 04:02:26 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

London III (LON3) Datacenter Network Maintenance - zscaler.net

Wed, 13 May 2026 02:29:28 GMT

Zscaler will be performing hardware maintenance in the London III (LON3) Datacenter.

Maintenance window,
Start: 2026-05-14 20:30 BST
End: 2026-05-14 23:30 BST
(i.e. 2026-05-14 19:30 - 22:30 UTC)

Update - Thu, 14 May 2026 21:54:47 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Datacenter Maintenance - private.zscaler.com

Wed, 13 May 2026 00:33:13 GMT

Zscaler is performing proactive emergency maintenance activity for data centers across Geo regions.
Users may observe very brief disconnect and reconnect to ZPA cloud during the maintenance activity.

Update - Wed, 13 May 2026 14:50:30 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Singapore IV (SIN4) Datacenter Network Maintenance - zscloud.net, zscalerthree.net, zdxcloud.net

Tue, 12 May 2026 08:17:55 GMT

Zscaler will be performing hardware maintenance in the Singapore IV (SIN4) Datacenter.

Maintenance window,
Start: 2026-05-15 11:00 UTC
End: 2026-05-15 13:00 UTC
(Local Time 2026-05-15 19:00 - 21:00)

Update - Fri, 15 May 2026 11:43:33 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Zurich I (ZRH1) Datacenter Network Maintenance - zscaler.net, zscalerone.net, zscalertwo.net, zscloud.net, zscalerthree.net, private.zscaler.com

Mon, 11 May 2026 19:38:15 GMT

Zscaler will be performing hardware maintenance in the Zurich I (ZRH1) Datacenter.

Maintenance window,
Start: 2026-05-13 19:00 CEST
End: 2026-05-13 23:00 CEST
(i.e. 2026-05-13 17:00 - 21:00 UTC)

During this maintenance, traffic will failover to redundant devices in the same datacenter, and we expect no service impact.

Update - Wed, 13 May 2026 23:50:32 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Copenhagen II Datacenter Scheduled Maintenance - IPv6 Enablement - zscaler.net, zscalertwo.net, zscloud.net, zscalerthree.net

Mon, 11 May 2026 18:31:48 GMT

Zscaler will be enabling IPv6 at our Copenhagen II (CPH2) Data Center. During the maintenance window the services through CPH2 Data Center will be restarted in phases to minimize the service impact.

Other Zscaler sites and Zscaler Services will continue to operate normally.

Maintenance Window:

Start time is May 15, 9:00 am PDT (May 15, 16:00 UTC)

End time is May 15, 4:00 pm PDT (May 15, 23:00 UTC)

Update 5/15: Extending Maintenance
Update 5/15: Extending Maintenance

Update - Fri, 15 May 2026 22:48:52 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Dallas II Datacenter Scheduled Maintenance - IPv6 Enablement - zscloud.net

Mon, 11 May 2026 18:19:06 GMT

Zscaler will be enabling IPv6 at our Dallas II (DFW2) Data Center. During the maintenance window the services through DFW2 Data Center will be restarted in phases to minimize the service impact.

Other Zscaler sites and Zscaler Services will continue to operate normally.

Maintenance Window:

Start time is May 14, 6:00 pm PDT (May 15, 1:00 UTC)

End time is May 14, 11:00 pm PDT (May 15, 6:00 UTC)

Update - Fri, 15 May 2026 05:03:21 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Frankfurt IV Datacenter Scheduled Maintenance - IPv6 Enablement - zscaler.net, zscalertwo.net, zscloud.net

Mon, 11 May 2026 17:16:19 GMT

Zscaler will be enabling IPv6 at our Frankfurt IV (FRA4) Data Center. During the maintenance window the services through FRA4 Data Center will be restarted in phases to minimize the service impact.

Other Zscaler sites and Zscaler Services will continue to operate normally.

Maintenance Window:

Start time is May 13, 9:00 am PDT (May 13, 16:00 UTC)

End time is May 13, 4:00 pm PDT (May 13, 23:00 UTC)

Update - Wed, 13 May 2026 23:19:31 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Dallas I Datacenter Scheduled Maintenance - IPv6 Enablement - zscaler.net, zscalertwo.net, zscloud.net

Mon, 11 May 2026 17:00:59 GMT

Zscaler will be enabling IPv6 at our Dallas I (DFW1) Data Center. During the maintenance window the services through DFW1 Data Center will be restarted in phases to minimize the service impact.

Other Zscaler sites and Zscaler Services will continue to operate normally.

Maintenance Window:

Start time is May 12, 6:00 pm PDT (May 13, 1:00 UTC)

End time is May 12, 12:00 pm PDT (May 13, 7:00 UTC)

Update - Wed, 13 May 2026 07:13:20 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Perth I (PER1) Datacenter Network Maintenance - zscalertwo.net

Mon, 11 May 2026 12:09:12 GMT

Zscaler will be performing hardware maintenance in Perth I (PER1) Datacenter.

Maintenance window:
Start: 2026-05-12 12:00 UTC
End: 2026-05-12 15:00 UTC
(Local Time 2026-05-12 20:00 - 2026-05-12 23:00 AWST)

Update - Tue, 12 May 2026 14:00:37 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Atlanta III (ATL3) Datacenter Network Maintenance - zscalertwo.net, private.zscaler.com

Mon, 11 May 2026 06:56:42 GMT

Zscaler will be performing hardware maintenance in Atlanta III (ATL3) Datacenter.

Scheduled Maintenance window,
Start: 2026-05-14 02:00 UTC
End: 2026-05-14 06:00 UTC
(Local Time 2026-05-13 22:00 - 2026-05-14 02:00)

Update - Thu, 14 May 2026 04:59:14 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

China Premium Access Plus Beijing Datacenter (Beijing V) Network Maintenance - zscaler.net, zscalertwo.net, zscloud.net, zscalerthree.net

Mon, 11 May 2026 03:50:48 GMT

Beijing V DC network providers have advised maintenance work as below. During the maintenance window, China Premium Access Plus Services within these data centres may experience intermittent disconnections.

Start Time: 2026-05-27 20:00:00 UTC
End Time: 2026-05-27 21:00:00 UTC
(Datacenter Local Time 2026-05-28 04:00 - 2026-05-28 05:00 China Standard Time (UTC+8:00))

Reason of Maintenance: Provider advised maintenance.
Impact During Maintenance: Intermittent connectivity might be observed during the maintenance period

China Premium Access Plus Beijing Datacenter (Beijing V) Network Maintenance - zscaler.net, zscalertwo.net, zscloud.net, zscalerthree.net

Mon, 11 May 2026 03:48:12 GMT

Start Time: 2026-05-14 16:00:00 UTC
End Time: 2026-05-14 17:00:00 UTC
(Datacenter Local Time 2026-05-15 00:00 - 2026-05-15 01:00 China Standard Time (UTC+8:00))

Reason of Maintenance: Provider advised maintenance.
Impact During Maintenance: Intermittent connectivity might be observed during the maintenance period

Update - Thu, 14 May 2026 18:00:23 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Urgent Maintenance - zdxcloud.net

Sun, 10 May 2026 02:59:16 GMT

The Zscaler SRE team will be performing an urgent maintenance on the zdxcloud.net cloud. This maintenance is scheduled for Sunday at 03:05 AM UTC on 10th May, 2026, and can take up to 1 hour to complete. During this maintenance window the ZDX Admin Portal, including policy management, reporting access, and authentication of new users will not be available. As part of our standard maintenance process all logs will be collected and available after maintenance has completed.

Update - Sun, 10 May 2026 04:10:17 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Urgent Maintenance - zdxcloud.net

Sat, 09 May 2026 03:34:03 GMT

The Zscaler SRE team will be performing an urgent maintenance on the zdxcloud.net cloud. This maintenance is scheduled for Saturday at 03:30 AM UTC on 9th May, 2026, and can take up to 1 hour to complete. During this maintenance window the ZDX Admin Portal, including policy management, reporting access, and authentication of new users will not be available. As part of our standard maintenance process all logs will be collected and available after maintenance has completed.

Update - Sat, 09 May 2026 04:51:15 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

London III (LON3) Datacenter Network Maintenance - zscaler.net

Fri, 08 May 2026 22:46:50 GMT

Zscaler will be performing hardware maintenance in the London III (LON3) Datacenter.

Maintenance window,
Start: 2026-05-12 20:30 BST
End: 2026-05-12 23:30 BST
(i.e. 2026-05-12 19:30 - 22:30 UTC)

During the maintenance, traffic will failover to redundant devices in the same datacenter. However, intermittent connections and connection reestablishment may be observed.

Atlanta II (ATL2) Datacenter Network Maintenance - zscaler.net, zscalerone.net, zscalertwo.net, zscloud.net, zscalerthree.net, private.zscaler.com, zpatwo.net

Fri, 08 May 2026 18:56:05 GMT

Zscaler will be performing hardware maintenance in the Atlanta II (ATL2) Datacenter.

Maintenance window,
Start: 2026-5-12 03:00 EDT
End: 2026-5-12 07:00 EDT
(i.e. 2026-5-12 07:00 - 11:00 UTC)

During this maintenance, traffic will failover to redundant devices in the same datacenter, and we expect no service impact.

Update - Tue, 12 May 2026 09:33:01 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Urgent Scheduled Maintenance - zdxcloud.net

Fri, 08 May 2026 06:08:10 GMT

The Zscaler SRE team will be performing an urgent maintenance on the zdxcloud.net cloud. This maintenance is scheduled for Friday at 06:30 AM UTC on 8th May, 2026, and can take up to 30 minutes to complete. During this maintenance window the ZDX Admin Portal, including policy management, reporting access, and authentication of new users will not be available. As part of our standard maintenance process all logs will be collected and available after maintenance has completed.

Update - Fri, 08 May 2026 06:59:21 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Tel Aviv II (TLV2) Datacenter Scheduled Maintenance - zscloud.net

Fri, 08 May 2026 03:38:17 GMT

Zscaler will be performing hardware maintenance in Tel Aviv II (TLV2) Datacenter.

New Maintenance window,
Start: 2026-05-11 01:00 UTC
End: 2026-05-11 04:00 UTC
(Local Time 2026-05-11 04:00 - 2026-05-11 07:00 Local Time)

Update - Mon, 11 May 2026 03:22:55 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Planned Maintenance Activity for ZPA platform service - private.zscaler.com

Thu, 07 May 2026 06:56:36 GMT

We will be performing planned maintenance on our platform infrastructure in the Prod EMEA region to enhance availability and resiliency. Some customers may witness below impact during this maintenance window:

Momentary disconnect and auto-reconnect of zcc.
Any active session will be disconnected and logged under ZPA User Activity logs as “MT_CLOSED_TLS_CONN_GONE_SCIM_USER_MOVED”

Important Note: No action is required from customers and this communication is only intended to inform in advance.

Please reach out to support if you have any questions or require further clarification.

Urgent Maintenance - zdxcloud.net

Wed, 06 May 2026 18:21:38 GMT

The Zscaler Site Reliability Engineering team will be performing an urgent maintenance on the zdxcloud.net cloud. This maintenance is scheduled for Wednesday at 08:00 PM Pacific Time on May 6, 2026 (Thursday, May 7, 2026 03:00 AM UTC), and can take up to 3 hours to complete.

During this maintenance window the ZDX Admin Portal, including policy management, reporting access, and authentication of new users will not be available. As part of our standard maintenance process all logs will be collected and available after maintenance has completed.

Latest Update - Thu, 07 May 2026 08:02:18 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Update - Thu, 07 May 2026 06:03:33 UTC

Zscaler is extending the maintenance by 2 hours.

Update - Thu, 07 May 2026 08:02:18 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Urgent Maintenance - zscalerone.net

Tue, 05 May 2026 23:19:15 GMT

The Zscaler Site Reliability Engineering team will be performing an urgent maintenance on zscalerone.net cloud. This maintenance is scheduled for Thursday at 02:30 PM Pacific Time on May 7, 2026 (Thursday, May 7, 2026 09:30 PM UTC), and can take up to 4 hours to complete.

Update - Fri, 08 May 2026 00:13:41 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Hong Kong III Datacenter Scheduled Maintenance – IPv6 Enablement - zscaler.net, zscloud.net

Tue, 05 May 2026 19:18:01 GMT

Zscaler will perform scheduled maintenance at our Hong Kong III (HKG3) Data Center to complete preparatory work for future IPv6 enablement.

During the maintenance window, services through the HKG3 Data Center may be restarted in phases to minimize impact.

Other Zscaler sites and services will continue to operate normally.

Maintenance Window:

Start time is May 7, 9:00 am PDT (May 7, 16:00 UTC)

End time is May 7, 4:00 pm PDT (May 7, 23:00 UTC)

Urgent Maintenance Notification – Zero Trust Browser - zscalerthree.net

Tue, 05 May 2026 18:28:19 GMT

Zscaler will perform urgent maintenance for the Zero Trust Browser service to update a required Zscaler Internet Access (ZIA) certificate on zscalerthree.net cloud.

Maintenance Window:
May 6, 2026 | 12:00 AM – 02:00 AM UTC

Expected Impact:
Existing Zero Trust Browser sessions will not be affected during this maintenance activity. Customers initiating new Zero Trust Browser sessions during the maintenance window may experience brief and intermittent access issues while the certificate update is being completed.

Reason for Maintenance:
This maintenance is required to update the ZIA certificate utilized by the Zero Trust Browser service prior to certificate expiration.

Zscaler will actively monitor the environment throughout the maintenance window to ensure service stability.

Update - Wed, 06 May 2026 01:00:41 UTC

This activity has been completed.

Capetown IV Datacenter Scheduled Maintenance - IPv6 Enablement - zscalerone.net

Tue, 05 May 2026 16:33:59 GMT

Zscaler will be enabling IPv6 at our Capetown IV (CPT4) Data Center. During the maintenance window the services through CPT4 Data Center will be restarted in phases to minimize the service impact.

Other Zscaler sites and Zscaler Services will continue to operate normally.

Maintenance Window:

Start time is May 7, 9:00 am PDT (May 7, 16:00 UTC)

End time is May 7, 2:00 pm PDT (May 7, 21:00 UTC)

Sao Paulo IV Datacenter Scheduled Maintenance - Service Expansion - zscalertwo.net

Tue, 05 May 2026 00:01:30 GMT

Zscaler will be expanding its global data center footprint and performing maintenance at our Sao Paulo IV (SAO4) data center. We expect minimal to no impact to services during the maintenance window.

Please update your firewall policy rules and any upstream Access Control Lists to allow all IP addresses for this DC

For more information, please visit:

Maintenance Window:

Start time is May 5, 6:00 pm PDT (May 6, 1:00 UTC)

End time is May 5, 11:00 pm PDT (May 6, 6:00 UTC)

Update - Wed, 06 May 2026 06:10:34 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Sao Paulo IV Datacenter Scheduled Maintenance - IPv6 Enablement - zscalerthree.net

Mon, 04 May 2026 23:56:06 GMT

Zscaler will be enabling IPv6 at our Sao Paulo IV (SAO4) Data Center. During the maintenance window the services through SAO4 Data Center will be restarted in phases to minimize the service impact.

Other Zscaler sites and Zscaler Services will continue to operate normally.

Maintenance Window:

Start time is May 5, 6:00 pm PDT (May 6, 1:00 UTC)

End time is May 5, 11:00 pm PDT (May 6, 6:00 UTC)

Update - Wed, 06 May 2026 07:09:06 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Kuala Lumpur II (KUL2) Datacenter Network Maintenance - zscaler.net, zscalerone.net, zscalertwo.net, zscloud.net, zscalerthree.net, private.zscaler.com, zpatwo.net

Mon, 04 May 2026 20:54:26 GMT

Zscaler will be performing hardware maintenance in the Kuala Lumpur II (KUL2) Datacenter.

Maintenance window,
Start: 2026-05-06 04:00 GMT+8
End: 2026-05-06 06:00 GMT+8
(i.e. 2026-05-06 20:00 - 22:00 UTC)

During this maintenance, traffic will failover to redundant devices in the same datacenter, and we expect no service impact.

Update - Wed, 06 May 2026 21:11:55 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Kolkata I (CCU1) Datacenter Network Maintenance - zscaler.net, zscalerone.net, zscalertwo.net, zscloud.net, zscalerthree.net, private.zscaler.com, zpatwo.net

Mon, 04 May 2026 20:51:49 GMT

Zscaler will be performing hardware maintenance in the Kolkata I (CCU1) Datacenter.

Maintenance window,
Start: 2026-05-06 01:30 IST
End: 2026-05-06 03:30 IST
(i.e. 2026-05-06 20:00 - 22:00 UTC)

During this maintenance, traffic will failover to redundant devices in the same datacenter, and we expect no service impact.

Update - Wed, 06 May 2026 21:11:43 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Tel Aviv II (TLV2) Datacenter Scheduled Maintenance - zscloud.net

Mon, 04 May 2026 01:13:06 GMT

Zscaler will be performing hardware maintenance in Tel Aviv II (TLV2) Datacenter.

New Maintenance window,
Start: 2026-05-05 01:00 UTC
End: 2026-05-05 04:00 UTC
(Local Time 2026-05-05 04:00 - 2026-05-05 07:00 Local Time)

ZPA Logging zone Maintenance - zpatwo.net

Sun, 03 May 2026 14:43:07 GMT

We will be performing maintenance activities to add a new Logging Zone in ZPATWO cloud to augment capacity, availability and resiliency. Some customers may witness below impact during this maintenance window:

Admin UI dashboards and diagnostics may display incomplete data temporarily.
If alerts are configured for these components, false events may be triggered.
Nanolog enabled customer will see timeouts on the dashboards.

Important Note:This maintenance will not impact live traffic. ZCC enrollment and ZPA logins will remain unaffected, and all services will continue to operate normally

Update - Sun, 03 May 2026 18:54:08 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Hong Kong III Datacenter Scheduled Maintenance - IPv6 Enablement - zscalertwo.net, zscalerthree.net

Fri, 01 May 2026 23:59:32 GMT

Zscaler will be enabling IPv6 at our Hong Kong III (HKG3) Data Center. During the maintenance window the services through HKG3 Data Center will be restarted in phases to minimize the service impact.

Other Zscaler sites and Zscaler Services will continue to operate normally.

Maintenance Window:

Start time is May 5, 9:00 am PDT (May 5, 16:00 UTC)

End time is May 5, 5:00 pm PDT (May 6, 00:00 UTC)

Update 5/5: Extending Maintenance

Update - Wed, 06 May 2026 05:32:00 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Helsinki I Datacenter Scheduled Maintenance - IPv6 Enablement - zscaler.net, zscalertwo.net, zscalerthree.net

Fri, 01 May 2026 00:22:07 GMT

Zscaler will be enabling IPv6 at our Helsinki I (HEL1) Data Center. During the maintenance window the services through HEL1 Data Center will be restarted in phases to minimize the service impact.

Other Zscaler sites and Zscaler Services will continue to operate normally.

Maintenance Window:

Start time is May 7, 9:00 am PDT (May 7,16:00 UTC)

End time is May 7, 2:00 pm PDT (May 7, 21:00 UTC)

Helsinki I Datacenter Scheduled Maintenance - Service Expansion - zscloud.net

Fri, 01 May 2026 00:17:30 GMT

Zscaler will be expanding its global data center footprint and performing maintenance at our Helsinki I (HEL1) data center. We expect minimal to no impact to services during the maintenance window.

Please update your firewall policy rules and any upstream Access Control Lists to allow all IP addresses for this DC

For more information, please visit:

Maintenance Window:

Start time is May 7, 9:00 am PDT (May 7, 16:00 UTC)

End time is May 7, 2:00 pm PDT (May 7, 21:00 UTC)

Copenhagen II Datacenter Scheduled Maintenance - IPv6 Enablement - zscaler.net, zscalertwo.net, zscloud.net, zscalerthree.net

Fri, 01 May 2026 00:05:31 GMT

Zscaler will be enabling IPv6 at our Copenhagen II (CPH2) Data Center. During the maintenance window the services through CPH2 Data Center will be restarted in phases to minimize the service impact.

Other Zscaler sites and Zscaler Services will continue to operate normally.

Maintenance Window:

Start time is May 8, 9:00 am PDT (May 8, 16:00 UTC)

End time is May 8, 2:00 pm PDT (May 8, 21:00 UTC)

Capetown IV Datacenter Scheduled Maintenance - IPv6 Enablement - zscaler.net, zscalertwo.net, zscloud.net, zscalerthree.net

Thu, 30 Apr 2026 23:57:20 GMT

Zscaler will be enabling IPv6 at our Capetown IV (CPT4) Data Center. During the maintenance window the services through CPT4 Data Center will be restarted in phases to minimize the service impact.

Other Zscaler sites and Zscaler Services will continue to operate normally.

Maintenance Window:

Start time is May 7, 9:00 am PDT (May 7, 16:00 UTC)

End time is May 7, 2:00 pm PDT (May 7, 21:00 UTC)

Amsterdam II Datacenter Scheduled Maintenance - IPv6 Enablement - zscaler.net, zscalertwo.net, zscalerthree.net

Thu, 30 Apr 2026 23:43:27 GMT

Zscaler will be enabling IPv6 at our Amsterdam II (AMS2) Data Center. During the maintenance window the services through AMS2 Data Center will be restarted in phases to minimize the service impact.

Other Zscaler sites and Zscaler Services will continue to operate normally.

Maintenance Window:

Start time is May 6, 10:00 am PDT (May 6, 17:00 UTC)

End time is May 6, 4:00 pm PDT (May 6, 23:00 UTC)

Update 5/6: Extended Maintenance

Update - Wed, 06 May 2026 23:13:10 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Los Angeles II Datacenter Scheduled Maintenance - IPv6 Enablement - zscaler.net, zscalertwo.net, zscloud.net

Thu, 30 Apr 2026 20:57:13 GMT

Zscaler will be enabling IPv6 at our Los Angeles II (QLA2) Data Center. During the maintenance window the services through QLA2 Data Center will be restarted in phases to minimize the service impact.

Other Zscaler sites and Zscaler Services will continue to operate normally.

Maintenance Window:

Start time is May 5, 6:00 pm PDT (May 6, 1:00 UTC)

End time is May 5, 11:00 pm PDT (May 6, 6:00 UTC)

Update - Wed, 06 May 2026 05:32:12 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Hyderabad I Datacenter Scheduled Maintenance - IPv6 Enablement - zscaler.net, zscloud.net

Thu, 30 Apr 2026 20:30:42 GMT

Zscaler will be enabling IPv6 at our Hyderabad I (HYD1) Data Center. During the maintenance window the services through HYD1 Data Center will be restarted in phases to minimize the service impact.

Other Zscaler sites and Zscaler Services will continue to operate normally.

Maintenance Window:

Start time is May 4, 9:00 am PDT (May 4, 16:00 UTC)

End time is May 4, 2:00 pm PDT (May 4, 21:00 UTC)

Update - Mon, 04 May 2026 21:14:41 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Los Angeles I Datacenter Scheduled Maintenance - IPv6 Enablement - zscaler.net, zscalertwo.net, zscloud.net

Thu, 30 Apr 2026 20:14:25 GMT

Zscaler will be enabling IPv6 at our Los Angeles I (QLA1) Data Center. During the maintenance window the services through QLA1 Data Center will be restarted in phases to minimize the service impact.

Other Zscaler sites and Zscaler Services will continue to operate normally.

Maintenance Window:

Start time is May 4, 9:00 pm PDT (May 5, 4:00 UTC)

End time is May 5, 3:00 am PDT (May 5, 10:00 UTC)

Update - Tue, 05 May 2026 08:12:19 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Manchester I (MAN1) Datacenter Network Maintenance - zscaler.net, zscalerone.net, zscalertwo.net, zscloud.net, zscalerthree.net, private.zscaler.com, zpatwo.net

Thu, 30 Apr 2026 18:00:43 GMT

Zscaler will be performing hardware maintenance in the Manchester I (MAN1) Datacenter.

Maintenance window,
Start: 2026-05-06 23:00 BST
End: 2026-05-07 03:00 BST
(i.e. 2026-05-06 22:00 - 2026-05-07 02:00 UTC)

During the maintenance, traffic will failover to redundant devices in the same datacenter. However, intermittent connections and connection reestablishment may be observed.

Hong Kong III Datacenter Scheduled Maintenance – IPv6 Enablement - zscalertwo.net, zscalerthree.net

Thu, 30 Apr 2026 15:47:09 GMT

Zscaler will perform scheduled maintenance at our Hong Kong III (HKG3) Data Center to complete preparatory work for future IPv6 enablement.

During the maintenance window, services through the HKG3 Data Center may be restarted in phases to minimize impact.

Other Zscaler sites and services will continue to operate normally.

Maintenance Window:

Start time is May 1, 9:00 am PDT (May 1, 16:00 UTC)

End time is May 1, 5:00 pm PDT (May 2, 00:00 UTC)

Update 5/1: Extending maintenance
Update 5/1: Extending maintenance

Update - Fri, 01 May 2026 23:42:28 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Tokyo IV Datacenter Scheduled Maintenance - Service Expansion - zscalerthree.net

Wed, 29 Apr 2026 21:36:25 GMT

Zscaler will be expanding its global data center footprint and performing maintenance at our Tokyo IV (TYO4) data center. We expect minimal to no impact to services during the maintenance window.

Please update your firewall policy rules and any upstream Access Control Lists to allow all IP addresses for this DC

For more information, please visit:

Maintenance Window:

Start time is May 1, 8:00 am PDT (May 1,15:00 UTC)

End time is May 1, 2:00 pm PDT (May 1, 21:00 UTC)

Update - Fri, 01 May 2026 20:55:15 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Tokyo V Datacenter Scheduled Maintenance - Service Expansion - zscaler.net, zscalerthree.net

Wed, 29 Apr 2026 21:28:21 GMT

Zscaler will be expanding its global data center footprint and performing maintenance at our Tokyo V (TYO5) data center. We expect minimal to no impact to services during the maintenance window.

Please update your firewall policy rules and any upstream Access Control Lists to allow all IP addresses for this DC

For more information, please visit:

Maintenance Window:

Start time is May 1, 8:00 am PDT (May 1,15:00 UTC)

End time is May 1, 2:00 pm PDT (May 1, 21:00 UTC)

Update 4/29: Corrected time

Update - Fri, 01 May 2026 20:54:42 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Tokyo V Datacenter Scheduled Maintenance - IPv6 Enablement - zscaler.net, zscalerthree.net

Wed, 29 Apr 2026 21:22:14 GMT

Zscaler will be enabling IPv6 at our Tokyo V (TYO5) Data Center. During the maintenance window the services through TYO5 Data Center will be restarted in phases to minimize the service impact.

Other Zscaler sites and Zscaler Services will continue to operate normally.

Maintenance Window:

Start time is May 1, 8:00 pm PDT (May 1,15:00 UTC)

End time is May 1, 2:00 pm PDT (May 1, 21:00 UTC)

New Delhi I Datacenter Scheduled Maintenance - IPv6 Enablement - zscalertwo.net, zscloud.net

Wed, 29 Apr 2026 21:16:23 GMT

Zscaler will be enabling IPv6 at our New Delhi I (DEL1) Data Center. During the maintenance window the services through DEL1 Data Center will be restarted in phases to minimize the service impact.

Other Zscaler sites and Zscaler Services will continue to operate normally.

Maintenance Window:

Start time is May 1, 9:00 am PDT (May 1, 16:00 UTC)

End time is May 1, 2:00 pm PDT (May 1, 21:00 UTC)

Update - Fri, 01 May 2026 20:33:50 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Datacenter Expansion Kuala Lampur II (KUL2) - private.zscaler.com, zpatwo.net

Tue, 28 Apr 2026 00:36:37 GMT

As part of our regular expansion of capacity, we are adding ZPA Public Service Edge nodes to our new data center in Kuala Lampur II (KUL2).

These would be available anytime on or after May 1, 2026.

Region	Location	Notes
APAC	KUALA LAMPUR II	New DC

The IP addresses for the DC are part of the already published IP address range.

Please update your firewall policy rules along with any upstream ACL(s) to allow the IP address ranges to avoid any service disruption.

For more information, please visit:

Update - Wed, 06 May 2026 20:50:44 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Reminder Notification for Upcoming Data Center Expansions - zscaler.net, zscalertwo.net, zscloud.net, zscalerthree.net, private.zscaler.com, zpatwo.net

Mon, 27 Apr 2026 19:49:11 GMT

Dear Customer,

In accordance with the Zscaler Service Continuity Policy and as previously announced via email notification and Trust on March 13, 2026, we would like to remind you of the upcoming data center expansions at the locations listed below. These would be effective anytime on or after May 12, 2026.

Please update your firewall policy rules and any upstream access control lists to allow the new IP address ranges to avoid any service disruption.

Region	Location	CIDR	Notes
Americas	New York IV	198.14.96.0/23	Expansion of existing data center
Americas	New York IV	198.14.98.0/23	Expansion of existing data center
Americas	New York IV	198.14.100.0/23	Expansion of existing data center
Americas	New York IV	198.14.102.0/23	Expansion of existing data center
EMEA	Paris IV	137.31.8.0/23	Expansion of existing data center
EMEA	Paris IV	137.31.10.0/23	Expansion of existing data center
EMEA	Paris II	137.31.12.0/23	Expansion of existing data center

We recommend that you add the IP address ranges listed in the “Zscaler Aggregate IP Address Ranges’’ section of the CENR page to your access lists, firewalls, and application allowlists to avoid service disruption. The IPs from these ranges can be put in use by Zscaler for Web and Internet Application communication and dynamic service resolution.

For more information, please visit:

If you have any questions, please contact Zscaler Support via the “Support” link on the Zscaler Administration U.I. or contact us by phone:

USA Toll Free: +1-844-971-0010

Global Direct: +1-408-752-5885

Release Upgrade for Zscaler Data Security Posture Management (DSPM) - app.eu.zsdpc.net

Mon, 27 Apr 2026 04:03:46 GMT

Zscaler Data Posture Control (DSPM) Operations team will be performing a planned upgrade activity on April 27th, 2026. These service updates are applied in regional off-peak hours and should not result in any downtime for customers. Please reach out to Customer support for more information about the changes.

Update - Mon, 27 Apr 2026 06:16:08 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Release Upgrade for Zscaler Data Security Posture Management (DSPM) - app.zsdpc.net

Wed, 22 Apr 2026 04:03:36 GMT

Zscaler Data Posture Control (DSPM) Operations team will be performing a planned upgrade activity on April 22nd, 2026. These service updates are applied in regional off-peak hours and should not result in any downtime for customers. Please reach out to Customer support for more information about the changes.

Update - Wed, 22 Apr 2026 06:25:15 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Urgent Maintenance on zdxcloud.net - zdxcloud.net

Mon, 20 Apr 2026 07:46:00 GMT

The Zscaler SRE team will be performing an urgent maintenance on the zdxcloud.net cloud. This maintenance is scheduled for Monday at 08:00 AM UTC on April 20, 2026, and can take up to 1 hour to complete. During this maintenance window the ZDX Admin Portal, including policy management, reporting access, and authentication of new users will not be available. As part of our standard maintenance process all logs will be collected and available after maintenance has completed.

Update - Mon, 20 Apr 2026 08:53:24 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Urgent Maintenance on zdxcloud.net - zdxcloud.net

Mon, 20 Apr 2026 03:06:43 GMT

The Zscaler SRE team will be performing an urgent maintenance on the zdxcloud.net cloud. This maintenance is scheduled for Monday at 03:15 AM UTC on April 20, 2026, and can take up to 1 hour to complete. During this maintenance window the ZDX Admin Portal, including policy management, reporting access, and authentication of new users will not be available. As part of our standard maintenance process all logs will be collected and available after maintenance has completed.

Update - Mon, 20 Apr 2026 04:13:09 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Urgent Maintenance - zscalerthree.net

Fri, 17 Apr 2026 18:29:20 GMT

The Zscaler Site Reliability Engineering team will be performing an urgent maintenance on zscalerthree.net cloud. This maintenance is scheduled for Saturday at 06:00 AM Pacific Time on April 18, 2026 (Saturday, April 18, 2026 01:00 PM UTC), and can take up to 4 hours to complete.

Update - Sat, 18 Apr 2026 16:53:22 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Reminder Notification for Upcoming New DCs and Expansions - zscaler.net, zscalertwo.net, zscloud.net, zscalerthree.net, private.zscaler.com, zpatwo.net

Fri, 17 Apr 2026 18:09:57 GMT

Dear Customer,

In accordance with the Zscaler Service Continuity Policy and as previously announced via email notification and Trust on March 3, 2026, we would like to remind you of the upcoming New DCs and expansions at the locations listed below. These would be available anytime on or after May 2, 2026

Please update your firewall policy rules and any upstream access lists to allow the new IP address ranges to avoid any service disruption.

Region	Location	CIDR	Notes
Americas	Bogota II	205.220.57.0/24	New RS* data center
Americas	Bogota II	205.220.68.0/24	New RS* data center
APAC	Chennai II	205.220.122.0/23	Expansion of existing data center
APAC	Chennai II	205.220.124.0/23	Expansion of existing data center
APAC	Chennai II	205.220.126.0/23	Expansion of existing data center
APAC	Hong Kong IV	175.107.170.0/23	New data center
APAC	Hong Kong IV	175.107.172.0/23	New data center
APAC	Hong Kong IV	175.107.174.0/23	New data center
APAC	Hong Kong IV	175.107.176.0/23	New data center
APAC	Hong Kong IV	175.107.178.0/23	New data center
APAC	Hong Kong IV	2400:7aa0:2e00::/40	New data center
APAC	Hyderabad I	101.2.252.0/23	Expansion of existing data center
APAC	Hyderabad I	101.2.254.0/23	Expansion of existing data center
APAC	Jakarta I	162.128.187.0/24	New RS* data center
APAC	Shanghai II	116.196.192.0/24	Expansion of existing data center
EMEA	Abu Dhabi II	159.254.242.0/23	New data center
EMEA	Abu Dhabi II	159.254.244.0/23	New data center
EMEA	Abu Dhabi II	159.254.246.0/23	New data center
EMEA	Abu Dhabi II	159.254.248.0/23	New data center
EMEA	Abu Dhabi II	159.254.250.0/23	New data center
EMEA	Abu Dhabi II	2a03:eec0:3900::/40	New data center
EMEA	Abu Dhabi II	147.161.174.0/23	Allocation removed from this data center
EMEA	London III	170.85.60.0/23	Expansion of existing data center
EMEA	London V	159.254.222.0/23	Expansion of existing data center
EMEA	London V	159.254.224.0/23	Expansion of existing data center
EMEA	Frankfurt IV	159.254.226.0/23	Expansion of existing data center
EMEA	Frankfurt IV	159.254.228.0/23	Expansion of existing data center
EMEA	Frankfurt IV	159.254.230.0/23	Expansion of existing data center
EMEA	Frankfurt VI	159.254.232.0/23	Expansion of existing data center
EMEA	Frankfurt VI	159.254.234.0/23	Expansion of existing data center
EMEA	Manchester I	159.254.236.0/23	Expansion of existing data center
EMEA	Manchester I	159.254.238.0/23	Expansion of existing data center
EMEA	Marseille I	159.254.252.0/23	Expansion of existing data center

*RS - Regional Surcharge (An additional subscription is required to use these data centers)

For more information, please visit:

If you have any questions, please contact Zscaler Support via the “Support” link on the Zscaler Administration U.I. or contact us by phone:

USA Toll Free: +1-844-971-0010

Global Direct: +1-408-752-5885

Urgent Scheduled Maintenance - zscalerone.net

Fri, 17 Apr 2026 08:14:51 GMT

Zscaler is performing a service upgrade on Saturday at 6:00 AM PDT on April 18, 2026 (Saturday, April 18, 2026 , 01:00 PM UTC), and is expected to last up to 4 hours.
During this maintenance period, the Zscaler Client Connector Portal will be in maintenance mode. As a result, access to policy management and reporting will not be available. Existing devices that are already enrolled will not be affected, but there may be intermittent failures in registering new devices. Rest assured, all logs will be collected and made available once the maintenance mode window concludes.

Update - Sat, 18 Apr 2026 17:11:59 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Helsinki I (HEL1) Datacenter Network Maintenance - zscaler.net, zscalerone.net, zscalertwo.net, zscloud.net, zscalerthree.net, private.zscaler.com

Thu, 16 Apr 2026 18:35:24 GMT

Zscaler will be performing hardware maintenance in the Helsinki I (HEL1) Datacenter.

Maintenance window,
Start: 2026-04-17 21:00 EEST
End: 2026-04-18 01:00 EEST
(i.e. 2026-04-17 18:00 - 22:00 UTC)

During this maintenance, traffic will failover to redundant devices in the same datacenter, and we expect no service impact.

Update - Fri, 17 Apr 2026 20:03:32 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Stockholm III (STO3) Datacenter Network Maintenance - zscaler.net, zscalerone.net, zscalertwo.net, zscloud.net, zscalerthree.net, private.zscaler.com

Thu, 16 Apr 2026 18:33:41 GMT

Zscaler will be performing hardware maintenance in the Stockholm III (STO3) Datacenter.

Maintenance window,
Start: 2026-04-17 20:00 CEST
End: 2026-04-18 00:00 CEST
(i.e. 2026-04-17 18:00 - 22:00 UTC)

During this maintenance, traffic will failover to redundant devices in the same datacenter, and we expect no service impact.

Update - Fri, 17 Apr 2026 20:05:32 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Urgent Maintenance - zscalerone.net

Thu, 16 Apr 2026 06:28:38 GMT

The Zscaler Site Reliability Engineering team will be performing an urgent maintenance on zscalerone.net cloud. This maintenance is scheduled for Friday at 01:00 AM Pacific Time on April 17, 2026 (Friday, April 17, 2026 08:00 AM UTC), and can take up to 4 hours to complete.

Update - Fri, 17 Apr 2026 09:43:20 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

New Delhi I (DEL1) Datacenter Network Maintenance - zscloud.net

Wed, 15 Apr 2026 22:48:20 GMT

Zscaler will be performing hardware maintenance in the New Delhi I (DEL1) Datacenter.

Maintenance window,
Start: 2026-04-17 19:30:00 IST
End: 2026-04-17 23:30 IST
(i.e. 2026-04-17 14:00 - 18:00 UTC)

During the maintenance, traffic will failover to redundant devices in the same datacenter. However, intermittent connections and connection reestablishment may be observed.

[NOTE: EXTENDING MAINTENANCE AN ADDITIONAL TWO HOURS]

Update - Fri, 17 Apr 2026 18:12:50 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Upcoming Data Center Expansion in Zpa - private.zscaler.com

Wed, 15 Apr 2026 21:48:46 GMT

As part of our regular expansion of capacity, we are adding additional ZPA Public Service Edge nodes to our existing data center in Chicago II (CHI2) for Zpa cloud.

These would be available anytime on or after April 15, 2026.

Region	Location	Notes
AMERICAS	CHICAGO II	Expansion of Existing DC

The IP addresses for the DC are part of the already published IP address range.

Please update your firewall policy rules along with any upstream ACL(s) to allow the IP address ranges to avoid any service disruption.

For more information, please visit:

Update - Mon, 27 Apr 2026 19:27:37 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Upcoming Data Center Expansions in ZpaTwo - zpatwo.net

Wed, 15 Apr 2026 21:46:53 GMT

As part of our regular expansion of capacity, we are adding ZPA Public Service Edge nodes to our new data center in Chicago II (CHI2) for ZpaTwo cloud.

These would be available anytime on or after April 15, 2026.

Region	Location	Notes
AMERICAS	CHICAGO II	New DC

The IP addresses for the DC are part of the already published IP address range.

Please update your firewall policy rules along with any upstream ACL(s) to allow the IP address ranges to avoid any service disruption.

For more information, please visit:

Update - Mon, 27 Apr 2026 19:28:24 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Data Center Expansions in ZPATWO - zpatwo.net

Wed, 15 Apr 2026 20:52:31 GMT

Dear Zscaler Customer,

We would like to notify you of the public service edge expansions at the locations listed below. These were brought online recently.

Region	Location	Notes
APAC	Sydney V	New DC
EMEA	Warsaw II	New DC

The IP addresses for these DCs are part of the already published IP address range.

Please update your firewall policy rules along with any upstream ACL(s) to allow the IP address ranges to avoid any service disruption.

For more information, please visit:

Data Center Expansions in ZPA - private.zscaler.com

Wed, 15 Apr 2026 20:35:16 GMT

Dear Zscaler Customer,

We would like to notify you of the public service edge expansions at the locations listed below. These were brought online recently.

Region	Location	Notes
APAC	Sydney V	New DC
EMEA	Warsaw II	Expansion of Existing DC

The IP addresses for these DCs are part of the already published IP address range.

Please update your firewall policy rules along with any upstream ACL(s) to allow the IP address ranges to avoid any service disruption.

For more information, please visit:

New Delhi I (DEL1) Datacenter Network Maintenance - zscaler.net, zscalertwo.net, zscloud.net, zscalerthree.net, private.zscaler.com

Wed, 15 Apr 2026 17:53:40 GMT

Zscaler will be performing hardware maintenance in New Delhi I (DEL1) Datacenter.

Maintenance window:
Start: 2026-04-20 14:30 UTC
End: 2026-04-20 17:30 UTC
(Local Time 2026-04-20 20:00 - 2026-04-20 23:00 IST)

Update - Mon, 20 Apr 2026 15:15:47 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Chennai II (MAA2) Datacenter Network Maintenance - zscaler.net, zscalertwo.net, zscloud.net, zscalerthree.net, private.zscaler.com

Wed, 15 Apr 2026 17:46:00 GMT

Zscaler will be performing hardware maintenance in Chennai II (MAA2) Datacenter.

Maintenance window:
Start: 2026-04-17 14:30 UTC
End: 2026-04-17 17:30 UTC
(Local Time 2026-04-17 20:00 - 2026-04-17 23:00 IST)

Update - Fri, 17 Apr 2026 17:04:15 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Scheduled Maintenance on AMER region's Egress NAT nodes - zscaler.net, zscalerone.net, zscalertwo.net, zscloud.net, zscalerthree.net

Wed, 15 Apr 2026 00:58:23 GMT

The Zscaler Site Reliability Engineering team will be performing a scheduled maintenance on the AMER region's Egress NAT nodes on zscalerone.net, zscalertwo.net, zscalerthree.net, zscloud.net and zscaler.net clouds. This maintenance is scheduled for Sunday at 2:00 AM Pacific Time on Apr 19, 2026 (Sunday, Apr 19, 2026 09:00 AM UTC), and can take up to 4 hours to complete. We expect minimal to no impact to services during the maintenance window. All logs will be collected and available after maintenance is complete. Please contact Zscaler Support if you have additional questions.

Update - Sun, 19 Apr 2026 10:52:51 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Scheduled Maintenance on EMEA region's Egress NAT nodes - zscaler.net, zscalerone.net, zscalertwo.net, zscloud.net, zscalerthree.net

Wed, 15 Apr 2026 00:51:46 GMT

The Zscaler Site Reliability Engineering team will be performing a scheduled maintenance on the EMEA region's Egress NAT nodes on zscalerone.net, zscalertwo.net, zscalerthree.net, zscloud.net and zscaler.net clouds. This maintenance is scheduled for Saturday at 6:00 PM Pacific Time on Apr 18, 2026 (Sunday, Apr 19, 2026 01:00 AM UTC), and can take up to 4 hours to complete. We expect minimal to no impact to services during the maintenance window. All logs will be collected and available after maintenance is complete. Please contact Zscaler Support if you have additional questions.

Update - Sun, 19 Apr 2026 03:19:04 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Scheduled Maintenance on APAC region's Egress NAT nodes - zscaler.net, zscalerone.net, zscalertwo.net, zscloud.net, zscalerthree.net

Wed, 15 Apr 2026 00:49:45 GMT

The Zscaler Site Reliability Engineering team will be performing a scheduled maintenance on the APAC region's Egress NAT nodes on zscalerone.net, zscalertwo.net, zscalerthree.net, zscloud.net and zscaler.net clouds. This maintenance is scheduled for Saturday at 6:00 AM Pacific Time on Apr 18, 2026 (Saturday, Apr 18, 2026 01:00 PM UTC), and can take up to 4 hours to complete. We expect minimal to no impact to services during the maintenance window. All logs will be collected and available after maintenance is complete. Please contact Zscaler Support if you have additional questions.

Update - Mon, 20 Apr 2026 04:20:34 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Scheduled Maintenance on Oceania region's Egress NAT nodes - zscaler.net, zscalerone.net, zscalertwo.net, zscloud.net, zscalerthree.net

Wed, 15 Apr 2026 00:45:54 GMT

The Zscaler Site Reliability Engineering team will be performing a scheduled maintenance on the Oceania region's Egress NAT nodes on zscalerone.net, zscalertwo.net, zscalerthree.net, zscloud.net and zscaler.net clouds. This maintenance is scheduled for Saturday at 2:00 AM Pacific Time on Apr 18, 2026 (Saturday, Apr 18, 2026 09:00 AM UTC), and can take up to 4 hours to complete. We expect minimal to no impact to services during the maintenance window. All logs will be collected and available after maintenance is complete. Please contact Zscaler Support if you have additional questions.

Update - Sat, 18 Apr 2026 10:00:27 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Brussels (BRU2) Datacenter Network Maintenance - zscaler.net, zscalerone.net, zscalertwo.net, zscloud.net, zscalerthree.net, private.zscaler.com

Mon, 13 Apr 2026 21:45:00 GMT

Zscaler will be performing hardware maintenance in the Brussels II (BRU2) Datacenter.

Maintenance window,
Start: 2026-04-17 21:00 CEST
End: 2026-04-17 23:00 CEST
(i.e. 2026-04-17 19:00 - 21:00 UTC)

During this maintenance, traffic will failover to redundant devices in the same datacenter, and we expect no service impact.

Update - Fri, 17 Apr 2026 20:02:04 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Munich I Datacenter Scheduled Maintenance - IPv6 Enablement - zscloud.net

Fri, 10 Apr 2026 23:51:56 GMT

Zscaler will be enabling IPv6 at our Munich I (MUC1) Data Center. During the maintenance window the services through MUC1 Data Center will be restarted in phases to minimize the service impact.

Other Zscaler sites and Zscaler Services will continue to operate normally.

Maintenance Window:

Start time is April 14, 1:30 pm PDT (April 14, 20:30 UTC)

End time is April 14, 6:00 pm PDT (April 15, 1:00 UTC)

Update - Wed, 15 Apr 2026 00:58:24 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Scheduled Maintenance Extended - EMEA Region - zscaler.net

Fri, 10 Apr 2026 22:58:38 GMT

The Zscaler Site Reliability Engineering team will be extending the scheduled maintenance of the EMEA region data centers on zscaler.net cloud by 3 hours. During this extended maintenance window the ZIA Admin Portal, including policy management and reporting access, and new user authentication should be successful. As part of our standard maintenance process, all logs will be collected and available after maintenance has been completed.

Update - Sat, 11 Apr 2026 01:02:06 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Atlanta II Datacenter Scheduled Maintenance - IPv6 Enablement - zscaler.net, zscalertwo.net, zscloud.net

Fri, 10 Apr 2026 21:16:49 GMT

Zscaler will be enabling IPv6 at our Atlanta II (ATL2) Data Center. During the maintenance window the services through ATL2 Data Center will be restarted in phases to minimize the service impact.

Other Zscaler sites and Zscaler Services will continue to operate normally.

Maintenance Window:

Start time is April 16, 6:00 pm PDT (April 17, 1:00 UTC)

End time is April 17, 12:00 am PDT (April 17, 10:00 UTC)

Update 4/17: Extending Maintenance

Update - Fri, 17 Apr 2026 08:40:41 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Auckland II Datacenter Scheduled Maintenance - IPv6 Enablement - zscaler.net, zscalertwo.net, zscloud.net

Fri, 10 Apr 2026 21:11:29 GMT

Zscaler will be enabling IPv6 at our Auckland II (AKL2) Data Center. During the maintenance window the services through AKL2 Data Center will be restarted in phases to minimize the service impact.

Other Zscaler sites and Zscaler Services will continue to operate normally.

Maintenance Window:

Start time is April 16, 6:00 am PDT (April 16, 13:00 UTC)

End time is April 16, 11:00 am PDT (April 16, 18:00 UTC)

Update - Thu, 16 Apr 2026 18:01:01 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Boston I Datacenter Scheduled Maintenance - IPv6 Enablement - zscaler.net

Fri, 10 Apr 2026 21:08:41 GMT

Zscaler will be enabling IPv6 at our Boston I (BOS1) Data Center. During the maintenance window the services through BOS1 Data Center will be restarted in phases to minimize the service impact.

Other Zscaler sites and Zscaler Services will continue to operate normally.

Maintenance Window:

Start time is April 15, 6:00 pm PDT (April 16, 13:00 UTC)

End time is April 15, 11:00 pm PDT (April 16, 18:00 UTC)

Update - Thu, 16 Apr 2026 02:49:31 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Amsterdam III Datacenter Scheduled Maintenance - IPv6 Enablement - zscaler.net, zscalertwo.net, zscloud.net, zscalerthree.net

Fri, 10 Apr 2026 21:05:47 GMT

Zscaler will be enabling IPv6 at our Amsterdam III (AMS3) Data Center. During the maintenance window the services through AMS3 Data Center will be restarted in phases to minimize the service impact.

Other Zscaler sites and Zscaler Services will continue to operate normally.

Maintenance Window:

Start time is April 15, 1:30 pm PDT (April 15, 20:30 UTC)

End time is April 15, 6:30 pm PDT (April 16, 1:30 UTC)

Update - Thu, 16 Apr 2026 00:11:26 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Tokyo IV Datacenter Scheduled Maintenance - IPv6 Enablement - zscloud.net

Fri, 10 Apr 2026 20:58:26 GMT

Zscaler will be enabling IPv6 at our Tokyo IV (TYO4) Data Center. During the maintenance window the services through TYO4 Data Center will be restarted in phases to minimize the service impact.

Other Zscaler sites and Zscaler Services will continue to operate normally.

Maintenance Window:

Start time is April 14, 9:00 pm PDT (April 14, 16:00 UTC)

End time is April 14, 2:00 pm PDT (April 14, 21:00 UTC)

Update 4/14: Maintenance postponed

Denver III (DEN3) Datacenter Network Maintenance - zscaler.net, zscalertwo.net, zscloud.net, zscalerthree.net

Fri, 10 Apr 2026 07:44:02 GMT

Zscaler will be performing hardware maintenance in Denver III (DEN3) Datacenter .

Maintenance window:
Start: 2026-04-13 05:00 UTC
End: 2026-04-13 08:00 UTC
(Local Time 2026-04-12 23:00 - 2026-04-13 02:00)

Update - Mon, 13 Apr 2026 06:03:07 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Scheduled Maintenance Extended - EMEA Region - zscloud.net

Thu, 09 Apr 2026 23:06:57 GMT

Update - Fri, 10 Apr 2026 01:49:29 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

China Premium Access Plus Beijing V and Shanghai VI Datacenter Network Maintenance - zscaler.net, zscalertwo.net, zscloud.net, zscalerthree.net

Thu, 09 Apr 2026 18:50:54 GMT

Beijing V and Shanghai VI DC network providers have advised maintenance work as below. During the maintenance window, China Premium Access Plus services within these data centres may experience intermittent disconnections.

Start Time: 2026-06-05 16:00:00 UTC
End Time: 2026-06-05 20:00:00 UTC
(Datacenter Local Time 2026-06-06 00:00 - 2026-06-06 04:00 China Standard Time (UTC+8:00))

Reason of Maintenance: Provider advised maintenance.
Impact During Maintenance: Intermittent connectivity might be observed during the maintenance period

Urgent Maintenance - zscalerone.net

Thu, 09 Apr 2026 19:17:31 GMT

The Zscaler Site Reliability Engineering team will be performing an urgent maintenance on zscalerone.net cloud. This maintenance is scheduled for Friday at 01:00 AM Pacific Time on April 10, 2026 (Friday, April 10, 2026 08:00 AM UTC), and can take up to 4 hours to complete.

Update - Fri, 10 Apr 2026 10:26:12 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Urgent Maintenance - zdxcloud.net

Thu, 09 Apr 2026 18:26:22 GMT

The Zscaler Site Reliability Engineering team will be performing an urgent maintenance on the zdxcloud.net cloud. This maintenance is scheduled for Thursday at 03:00 PM Pacific Time on April 9, 2026 (Thursday, April 9, 2026 10:00 PM UTC), and can take up to 2 hours to complete.

Update - Thu, 09 Apr 2026 23:29:01 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Chicago I (CHI1) Datacenter Network Maintenance - zscaler.net, zscalerone.net, zscalertwo.net, zscloud.net, zscalerthree.net, private.zscaler.com, zdxcloud.net, zpatwo.net

Thu, 09 Apr 2026 15:07:26 GMT

Zscaler will be performing hardware maintenance in the Chicago I (CHI1) Datacenter.

Maintenance window,
Start: 2026-4-13 03:00 CDT
End: 2026-4-13 05:00 CDT
(i.e. 2026-4-13 08:00 - 10:00 UTC)

No service impact is expected during this maintenance.

Update - Mon, 13 Apr 2026 08:16:35 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Maintenance Window Updates - zscalerthree.net

Thu, 09 Apr 2026 01:01:00 GMT

Zscaler is updating the maintenance window schedule for Oceania, APAC and AMER regions. The new schedule is effective starting April 23, 2026. Service updates for all regions will be recurring.

Time (in UTC- Coordinated Universal Time)
REGION	MON	TUES	WED	THU	FRI	SAT	SUN
Oceania		9:00 AM – 11:00 AM	9:00 AM – 11:00 AM	9:00 AM – 12:00 PM		9:00 AM – 12:00 PM
Asia Pacific	8:00 PM – 10:00 PM	8:00 PM – 10:00 PM	8:00 PM – 10:00 PM	4:00 PM – 7:00 PM		1:00 PM - 4:00 PM	3:00 PM – 6:00 PM
EMEA	8:00 PM – 10:00 PM	8:00 PM – 10:00 PM	8:00 PM – 10:00 PM	8:00 PM – 11:00 PM
AMER		6:00 AM – 8:00 AM	6:00 AM – 8:00 AM	6:00 AM – 8:00 AM	4:00 AM - 7:00 AM		9:00 AM – 12:00 PM
All Regions		1:00 AM – 3:00 AM	1:00 AM – 3:00 AM	1:00 AM – 3:00 AM			1:00 AM – 6:00 AM

Update - Wed, 06 May 2026 00:14:10 UTC

New schedule is in place starting April 23, 2026. Please contact Zscaler Support if you have additional questions.

Maintenance Window Updates - zscloud.net

Thu, 09 Apr 2026 00:54:16 GMT

Zscaler is updating the maintenance window schedule for Oceania, APAC and AMER regions. The new schedule is effective starting April 23, 2026. Service updates for all regions will be recurring.

Time(in UTC- Coordinated Universal Time)
REGION	MON	TUES	WED	THU	FRI	SAT	SUN
Oceania		9:00 AM – 11:00 AM	9:00 AM – 11:00 AM	9:00 AM – 12:00 PM		9:00 AM – 12:00 PM
Asia Pacific	8:00 PM – 10:00 PM	8:00 PM – 10:00 PM	8:00 PM – 10:00 PM	4:00 PM – 7:00 PM		1:00 PM - 4:00 PM	3:00 PM – 6:00 PM
EMEA	8:00 PM – 10:00 PM	8:00 PM – 10:00 PM	8:00 PM – 10:00 PM	8:00 PM – 11:00 PM
AMER		6:00 AM – 8:00 AM	6:00 AM – 8:00 AM	6:00 AM – 8:00 AM	3:00 AM - 6:00 AM		9:00 AM – 12:00 PM
All Regions		1:00 AM – 3:00 AM	1:00 AM – 3:00 AM	1:00 AM – 3:00 AM			1:00 AM – 6:00 AM

Update - Wed, 06 May 2026 00:13:33 UTC

New schedule is in place starting April 23, 2026. Please contact Zscaler Support if you have additional questions.

Maintenance Window Updates - zscalertwo.net

Thu, 09 Apr 2026 00:23:43 GMT

Zscaler is updating the maintenance window schedule for Oceania, EMEA and AMER regions. The new schedule is effective starting April 23, 2026. Service updates for all regions will be recurring.

Time (in UTC- Coordinated Universal Time)
REGION	MON	TUES	WED	THU	FRI	SAT	SUN
Oceania		9:00 AM – 11:00 AM	9:00 AM – 11:00 AM		9:00 AM – 12:00 PM	9:00 AM – 12:00 PM
Asia Pacific	8:00 PM – 10:00 PM	8:00 PM – 10:00 PM	8:00 PM – 10:00 PM		4:00 PM – 7:00 PM	1:00 PM -4:00 PM
EMEA	8:00 PM – 10:00 PM	8:00 PM – 10:00 PM	8:00 PM – 10:00 PM		8:00 PM – 11:00 PM		1:00 AM– 4:00 AM
AMER		6:00 AM – 8:00 AM	6:00 AM – 8:00 AM	6:00 AM – 8:00 AM			9:00 AM – 12:00 PM
All Regions		1:00 AM – 3:00 AM	1:00 AM – 3:00 AM	1:00 AM – 3:00 AM		1:00 AM – 6:00 AM

Update - Wed, 06 May 2026 00:12:51 UTC

New schedule is in place starting April 23, 2026. Please contact Zscaler Support if you have additional questions.

Maintenance Window Updates - zscaler.net

Wed, 08 Apr 2026 23:37:25 GMT

Zscaler is updating the maintenance window schedule for Oceania, APAC, EMEA and AMER regions. The new schedule is effective starting April 23, 2026. Service updates for all regions will be recurring.

Time (in UTC- Coordinated Universal Time)
REGION	MON	TUES	WED	THU	FRI	SAT	SUN
Oceania		9:00 AM – 11:00 AM	9:00 AM – 11:00 AM		9:00 AM – 12:00 PM	9:00 AM– 12:00 PM	9:00 AM– 12:00 PM
Asia Pacific	8:00 PM – 10:00 PM	8:00 PM – 10:00 PM	8:00 PM – 10:00 PM		4:00 PM – 7:00 PM	1:00 PM– 4:00 PM
EMEA	8:00 PM – 10:00 PM	8:00 PM – 10:00 PM	8:00 PM – 10:00 PM		8:00 PM – 11:00 PM		1:00 AM– 4:00 AM
AMER		6:00 AM – 8:00 AM	6:00 AM – 8:00 AM	6:00 AM – 8:00 AM			9:00 AM – 12:00 PM
All Regions		1:00 AM – 3:00 AM	1:00 AM – 3:00 AM	1:00 AM – 3:00 AM		1:00 AM– 6:00 AM

Update - Wed, 06 May 2026 00:12:03 UTC

New schedule is in place starting April 23, 2026. Please contact Zscaler Support if you have additional questions.

Maintenance Window Updates - zscalerone.net

Wed, 08 Apr 2026 22:46:17 GMT

Zscaler is updating the maintenance window schedule for Oceania, EMEA and AMER regions. The new schedule is effective starting April 23, 2026. Service updates for all regions will be recurring.

Time(in UTC- Coordinated Universal Time)
REGION	MON	TUES	WED	THU	FRI	SAT	SUN
Oceania		9:00 AM – 11:00 AM	9:00 AM – 11:00 AM		9:00 AM – 12:00 PM	9:00 AM – 12:00 PM
EMEA							1:00 AM– 4:00 AM
AMER		6:00 AM – 8:00 AM	6:00 AM – 8:00 AM	6:00 AM – 8:00 AM			9:00 AM – 12:00 PM
All Regions		1:00 AM – 3:00 AM	1:00 AM – 3:00 AM	1:00 AM – 3:00 AM	11:00 PM – 3:00 AM
	1:00 PM– 4:00 PM

Update - Wed, 06 May 2026 00:10:36 UTC

New schedule is in place starting April 23, 2026. Please contact Zscaler Support if you have additional questions.

Scheduled Maintenance - zscaler.net

Wed, 08 Apr 2026 18:19:14 GMT

The Zscaler Site Reliability Engineering team will be performing a scheduled maintenance on zscaler.net cloud. This maintenance is scheduled for Saturday at 06:00 AM Pacific Time on April 11, 2026 (Saturday, April 11, 2026 01:00 PM UTC), and can take up to 4 hours to complete.

Update - Sat, 11 Apr 2026 17:05:20 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Kolkata I (CCU1) Datacenter Network Maintenance - zscaler.net, zscalertwo.net, zscloud.net, zscalerthree.net, private.zscaler.com

Wed, 08 Apr 2026 07:24:37 GMT

Zscaler will be performing hardware maintenance in Kolkata I (CCU1) Datacenter.

Maintenance window:
Start: 2026-04-14 14:30 UTC
End: 2026-04-14 17:30 UTC
(Local Time 2026-04-14 20:00 - 2026-04-14 23:00 IST)

Update - Tue, 14 Apr 2026 15:15:25 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

London V Datacenter Scheduled Maintenance - IPv6 Enablement - zscalertwo.net

Tue, 07 Apr 2026 20:56:21 GMT

Zscaler will be enabling IPv6 at our London V (LON5) Data Center. During the maintenance window the services through LON5 Data Center will be restarted in phases to minimize the service impact.

Other Zscaler sites and Zscaler Services will continue to operate normally.

Maintenance Window:

Start time is April 17, 2:00 pm PDT (April 17, 21:00 UTC)

End time is April 17, 6:00 pm PDT (April 18, 1:00 UTC)

Update 4/8: Maintenance Window Updated
Update 4/10: Maintenance rescheduled

Update - Fri, 17 Apr 2026 23:57:43 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Munich I Datacenter Scheduled Maintenance – IPv6 Enablement - zscloud.net

Mon, 06 Apr 2026 19:24:51 GMT

Zscaler will perform scheduled maintenance at our Munich I (MUC1) Data Center to complete preparatory work for future IPv6 enablement. During the maintenance window, services through the MUC1 Data Center may be restarted in phases to minimize impact.

Other Zscaler sites and services will continue to operate normally.

Maintenance Window:

Start time is April 7, 1:00 pm PDT (April 7, 20:00 UTC)

End time is April 7, 6:00 pm PDT (April 8, 1:00 UTC)

Update - Tue, 07 Apr 2026 23:41:56 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

China Premium Access Plus Beijing V and Shanghai VI Datacenter Network Maintenance - zscaler.net, zscalertwo.net, zscloud.net, zscalerthree.net

Mon, 06 Apr 2026 16:46:29 GMT

Start Time: 2026-04-12 12:00:00 UTC
End Time: 2026-04-12 14:00:00 UTC
(Datacenter Local Time 2026-04-12 20:00 - 2026-04-12 22:00 China Standard Time (UTC+8:00))

Reason of Maintenance: Provider advised maintenance.
Impact During Maintenance: Intermittent connectivity might be observed during the maintenance period

Update - Sun, 12 Apr 2026 14:01:31 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Atlanta III (ATL3) Datacenter Network Maintenance - zscaler.net

Mon, 06 Apr 2026 16:13:19 GMT

Zscaler will be performing hardware maintenance in the Atlanta III (ATL3) Datacenter.

Maintenance window,
Start: 2026-4-7 18:00 EST
End: 2026-4-7 20:00 EST
(i.e. 2026-4-7 22:00 - 2026-4-8 00:00 UTC)

During the maintenance, traffic will failover to redundant devices in the same datacenter. However, intermittent connections and connection reestablishment may be observed.

Urgent Maintenance on zdxcloud.net - zdxcloud.net

Sun, 05 Apr 2026 06:04:25 GMT

The Zscaler SRE team will be performing an urgent maintenance on the zdxcloud.net cloud. This maintenance is scheduled for Sunday at 06:15 AM UTC on April 05, 2026, and can take up to 1 hour to complete. During this maintenance window the ZDX Admin Portal, including policy management, reporting access, and authentication of new users will not be available. As part of our standard maintenance process all logs will be collected and available after maintenance has completed.

Update - Sun, 05 Apr 2026 06:33:05 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Urgent Maintenance - zscaler.net, zscalerone.net, zscalertwo.net, zscloud.net, zscalerthree.net, zdxcloud.net

Sat, 04 Apr 2026 12:31:26 GMT

The Zscaler Site Reliability Engineering team will be performing an urgent maintenance during which access to the Zscaler Management Portal for Partners and ZDX Admin Portal might not be available. This maintenance is scheduled for Saturday at 05:45 AM Pacific Time on April 04, 2026 (Saturday, April 04, 2026 12:45 PM UTC), and can take up to 2 hours to complete. All logs will be collected and available after maintenance is complete. Please contact Zscaler Support if you have additional questions.

Update - Sat, 04 Apr 2026 13:52:04 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

London V Datacenter Scheduled Maintenance - Service Expansion - zscaler.net

Fri, 03 Apr 2026 22:09:50 GMT

Zscaler will be expanding its global data center footprint and performing maintenance at our London V (LON5) data center. We expect minimal to no impact to services during the maintenance window.

Please update your firewall policy rules and any upstream Access Control Lists to allow all IP addresses for this DC

For more information, please visit:

Maintenance Window:

Start time is April 9, 1:00 pm PDT (April 9, 20:00 UTC)

End time is April 9, 6:00 pm PDT (April 10, 1:00 UTC)

Update - Fri, 10 Apr 2026 00:55:23 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Montreal I Datacenter Scheduled Maintenance - Service Expansion - zscalerthree.net

Fri, 03 Apr 2026 22:04:38 GMT

Zscaler will be expanding its global data center footprint and performing maintenance at our Montreal I (YMQ1) data center. We expect minimal to no impact to services during the maintenance window.

Please update your firewall policy rules and any upstream Access Control Lists to allow all IP addresses for this DC

For more information, please visit:

Maintenance Window:

Start time is April 8, 6:00 pm PDT (April 9, 1:00 UTC)

End time is April 8, 11:00 pm PDT (April 9, 6:00 UTC)

Update - Thu, 09 Apr 2026 04:04:46 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Planned Maintenance Activity for ZPA platform service - private.zscaler.com

Thu, 02 Apr 2026 07:50:41 GMT

We will be performing planned maintenance on our platform infrastructure in the Prod US region to enhance availability and resiliency. Some customers may witness below impact during this maintenance window:

Momentary disconnect and auto-reconnect of zcc.
Any active session will be disconnected and logged under ZPA User Activity logs as “MT_CLOSED_TLS_CONN_GONE_SCIM_USER_MOVED”

Important Note: No action is required from customers and this communication is only intended to inform in advance.

Please reach out to support if you have any questions or require further clarification.

Update - Sun, 05 Apr 2026 03:06:25 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Upcoming New Data Centers and Expansions - zscaler.net, zscalertwo.net, zscloud.net, zscalerthree.net, private.zscaler.com, zpatwo.net

Wed, 01 Apr 2026 23:02:42 GMT

Dear Zscaler Customer,

In accordance with Zscaler Service Continuity Policy and per email notification sent on April 1, 2026, we would like to notify you of the upcoming new data centers and expansions at the locations listed below. These would be available anytime on or after May 31, 2026; 60 days or more from the date the first email notification is sent.

Please update your firewall policy rules and any upstream Access Control Lists (ACLs) to allow the new IP address ranges to avoid any service disruption.

Region	Location	CIDR	Notes
Americas	Montreal I	198.14.104.0/23	Expansion of existing data center
Americas	Seattle	198.14.106.0/23	Expansion of existing data center
Americas	Vancouver I	137.31.24.0/23	Expansion of existing data center
Americas	Vancouver I	137.31.26.0/23	Expansion of existing data center
EMEA	Amsterdam Il	137.31.28.0/23	Expansion of existing data center
EMEA	Amsterdam Il	137.31.30.0/23	Expansion of existing data center
EMEA	Zurich	137.31.20.0/23	Expansion of existing data center
EMEA	Zurich	137.31.22.0/23	Expansion of existing data center
APAC	Jakarta I	122.10.149.0/24	New RS* data center

*RS - Regional Surcharge (An additional subscription is required to use these data centers)

For more information, please visit:

If you have any questions, please contact Zscaler Support via the “Support” link on the Zscaler Administration U.I. or contact us by phone:

USA Toll Free: +1-844-971-0010

Global Direct: +1-408-752-5885

Scheduled Maintenance - zscalerthree.net

Wed, 01 Apr 2026 18:13:17 GMT

The Zscaler Site Reliability Engineering team will be performing a scheduled maintenance on zscalerthree.net cloud. This maintenance is scheduled for Saturday at 07:00 AM Pacific Time on April 4, 2026 (Saturday, April 4, 2026 02:00 PM UTC), and can take up to 4 hours to complete.

Update - Sat, 04 Apr 2026 17:54:54 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Zurich I Datacenter Scheduled Maintenance - Service Expansion - zscloud.net

Wed, 01 Apr 2026 17:17:16 GMT

Zscaler will be expanding its global data center footprint and performing maintenance at our Zurich I (ZRH1) data center. We expect minimal to no impact to services during the maintenance window.

Please update your firewall policy rules and any upstream Access Control Lists to allow all IP addresses for this DC

For more information, please visit:

Maintenance Window:

Start time is April 2, 1:30 pm PDT (April 2, 20:30 UTC)

End time is April 2, 4:30 pm PDT (April 2, 23:30 UTC)

Update - Thu, 02 Apr 2026 23:24:17 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Montreal I Datacenter Scheduled Maintenance - IPv6 Enablement - zscaler.net, zscalertwo.net, zscloud.net, zscalerthree.net

Wed, 01 Apr 2026 00:01:39 GMT

Zscaler will be enabling IPv6 at our Montreal I (YMQ1) Data Center. During the maintenance window the services through YMQ1 Data Center will be restarted in phases to minimize the service impact.

Other Zscaler sites and Zscaler Services will continue to operate normally.

Maintenance Window:

Start time is April 1, 6:00 pm PDT (April 2, 1:00 UTC)

End time is April 1, 11:00 pm PDT (April 2, 6:00 UTC)

Update - Thu, 02 Apr 2026 04:19:00 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Urgent Maintenance on Mumbai VI and New Delhi I datacenters - zscalerthree.net

Mon, 30 Mar 2026 23:15:07 GMT

The Zscaler Site Reliability Engineering team will be performing an urgent maintenance on the Mumbai VI and New Delhi I datacenters on the zscalerthree.net cloud. This maintenance is scheduled for Monday at 4:30 PM Pacific Time on March 30, 2026 (Monday, March 30, 2026 11:30 PM UTC), and can take up to 2 hours to complete. We expect minimal to no impact to services during the maintenance window. All logs will be collected and available after maintenance is complete. Please contact Zscaler Support if you have additional questions.

Update - Tue, 31 Mar 2026 00:18:58 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Zurich I Datacenter Scheduled Maintenance - IPv6 Enablement - zscaler.net, zscalertwo.net, zscloud.net, zscalerthree.net

Mon, 30 Mar 2026 21:59:16 GMT

Zscaler will be enabling IPv6 at our Zurich I (ZRH1) Data Center. During the maintenance window the services through ZRH1 Data Center will be restarted in phases to minimize the service impact.

Other Zscaler sites and Zscaler Services will continue to operate normally.

Maintenance Window:

Start time is April 9, 1:30 pm PDT (April 9, 20:30 UTC)

End time is April 9, 7:00 pm PDT (April 10, 2:00 UTC)

Update 3/31: Maintenance postponed
Update 4/7: Maintenance rescheduled
Update 4/8: Maintenance window updated

Update - Fri, 10 Apr 2026 01:54:52 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

São Paulo IV (SAO4) Critical Datacenter Network Maintenance - zscaler.net, zscalertwo.net, zscloud.net

Mon, 30 Mar 2026 19:33:18 GMT

Zscaler will be performing critical hardware maintenance in the São Paulo IV (SAO4) Datacenter.

Maintenance window,
Start: 2026-4-2 18:00 GMT-3
End: 2026-4-2 22:00 GMT-3
(i.e. 2026-4-2 21:00 - 2026-4-3 01:00 UTC)

During the maintenance, traffic will failover to redundant devices in the same datacenter. However, intermittent connections and connection reestablishment may be observed.

Update - Thu, 02 Apr 2026 23:36:57 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Reminder Notification For New Data Center and Old CIDR Deprecation - zscaler.net, zscalertwo.net, zscloud.net, zscalerthree.net, private.zscaler.com, zpatwo.net

Mon, 30 Mar 2026 18:59:14 GMT

Dear Customer,

In accordance with the Zscaler Service Continuity Policy and as previously announced via email notification and Trust on February 10, 2026, we would like to remind you of the upcoming new data center at the location listed below. This would be available anytime on or after April 11, 2026.

Please update your firewall policy rules and any upstream access lists to allow the new IP address ranges to avoid any service disruption.

Region	Location	CIDR	Notes
Americas	Mexico City II	205.220.94.0/23	New data center
Americas	Mexico City II	205.220.100.0/23	New data center
Americas	Mexico City II	205.220.104.0/23	New data center
Americas	Mexico City II	205.220.106.0/23	New data center
Americas	Mexico City II	205.220.108.0/23	New data center
Americas	Mexico City II	205.220.110.0/23	New data center
Americas	Mexico City II	205.220.112.0/23	New data center
Americas	Mexico City II	205.220.114.0/23	New data center
Americas	Mexico City II	205.220.116.0/23	New data center
Americas	Mexico City II	2605:4300:3a00::/40	New data center
All	All	199.168.148.0/22*	Deprecated

*Applicable only to private.zscaler.com cloud

You can safely remove the reference to the deprecated IP address range because these addresses are no longer in use.

We recommend that you add the IP address ranges listed in the ‘Zscaler Aggregate IP Address Ranges’’ section of the CENR page to your access lists, firewalls, and application allowlists to avoid service disruption. The IPs from these ranges can be put in use by Zscaler for Web and Internet Application communication and dynamic service resolution.

For more information, please visit:

If you have any questions, please contact Zscaler Support via the “Support” link on the Zscaler Administration U.I. or contact us by phone:

USA Toll Free: +1-844-971-0010

Global Direct: +1-408-752-5885

Planned Maintenance Activity for ZPA authentication service - private.zscaler.com

Fri, 27 Mar 2026 14:29:39 GMT

We will be performing planned maintenance on our ZPA authentication platform infrastructure to enhance availability and resiliency. Customers may witness authentication issue while login to Admin UI or Public API during this maintenance window.

Important Note: No action is required from customers and this communication is only intended to inform in advance.

Please reach out to support if you have any questions or require further clarification.

Update - Sat, 28 Mar 2026 03:34:33 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Urgent Maintenance - zscalertwo.net

Fri, 27 Mar 2026 05:20:39 GMT

The Zscaler Site Reliability Engineering team will be performing an urgent maintenance on zscalertwo.net cloud. This maintenance is scheduled for Thursday at 10:30 PM Pacific Time on March 26, 2026 (Friday, March 27, 2026 05:30 AM UTC), and can take up to 30 minutes to complete.

During the maintenance, the ZIA Admin Portal, and access to policy management will not be available. A brief impact to new user authentication might occur. However, all the logs that are collected during this period will be available after the maintenance ends.

Update - Fri, 27 Mar 2026 06:29:20 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

China Premium Access Plus Shanghai Datacenter (Shanghai VI) Network Maintenance - zscaler.net, zscalertwo.net, zscloud.net, zscalerthree.net

Thu, 26 Mar 2026 22:07:47 GMT

Shanghai VI DC network providers have advised maintenance work as below. During the maintenance window, China Premium Access Plus services within these data centres may experience intermittent disconnections.

Start Time: 2026-04-08 14:00:00 UTC
End Time: 2026-04-08 15:00:00 UTC
(Datacenter Local Time 2026-04-08 22:00 - 2026-04-08 23:00 China Standard Time (UTC+8:00))

Reason of Maintenance: Provider advised maintenance.
Impact During Maintenance: Intermittent connectivity might be observed during the maintenance period

Update - Wed, 08 Apr 2026 15:16:09 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Upcoming Extranet Virtual IP Address Announcement - zscloud.net

Thu, 26 Mar 2026 21:57:07 GMT

Dear Zscaler Customer,

In accordance with Zscaler Service Continuity Policy and per email notification sent on March 26, 2026, we would like to notify you of the new Virtual IP addresses (VIPs) for the Zscaler Extranet Application Support rollout.

These new Extranet VIPs can be used to terminate IPSec VPN tunnels with Extranet connectivity at the locations listed below. The VIPs will be displayed on the Zscaler Config page for ease of access and visibility. Users who do not wish to use Zscaler Extranet Application Support will not be impacted by this change.

Region	Location	Extranet VIP Addresses	Status
Americas	Chicago II (CHI2)	170.85.14.198	Future Use
Americas	Chicago II (CHI2)	2605:4300:2a10::3b	Future Use
Americas	Los Angeles II (QLA2)	170.85.230.198	Future Use
Americas	Los Angeles II (QLA2)	2605:4300:3710::3b	Future Use
Americas	Montreal I (YMQ1)	165.225.212.65	Future Use
Americas	Montreal I (YMQ1)	2605:4300:2711::43	Future Use
Americas	Santiago II (SCL2)	205.220.0.198	Live
Americas	Santiago II (SCL2)	2605:4300:e410::36	Future Use
Americas	São Paulo IV (SAO4)	147.161.128.59	Live
Americas	São Paulo IV (SAO4)	2605:4300:e311::43	Future Use
Americas	Washington IV (WAS4)	170.85.86.198	Future Use
Americas	Washington IV (WAS4)	2605:4300:2d10::27	Future Use
APAC	Chennai III (MAA3)	167.103.70.198	Future Use
APAC	Chennai III (MAA3)	2400:7aa0:2410::f	Future Use
APAC	Kolkata I (CCU1)	205.220.16.198	Live
APAC	Kolkata I (CCU1)	2400:7aa0:2910::36	Future Use
APAC	Kuala Lumpur II (KUL2)	205.220.70.198	Live
APAC	Kuala Lumpur II (KUL2)	2400:7aa0:2b10::36	Future Use
APAC	Mumbai VII (BOM7)	167.103.132.198	Future Use
APAC	Mumbai VII (BOM7)	2400:7aa0:2610::f	Future Use
APAC	Singapore V (SIN5)	167.103.60.198	Live
APAC	Singapore V (SIN5)	2400:7aa0:2310::3b	Future Use
APAC	Sydney V (SYD5)	101.2.224.198	Live
APAC	Sydney V (SYD5)	2400:7aa0:2c10::27	Future Use
EMEA	Amsterdam III (AMS3)	87.58.118.198	Future Use
EMEA	Amsterdam III (AMS3)	2a03:eec0:3410::3b	Future Use
EMEA	Madrid IV (MAD4)	2a03:eec0:3110::3b	Future Use
EMEA	Manchester II (MAN2)	194.9.106.198	Future Use
EMEA	Manchester II (MAN2)	2a03:eec0:2e10::3b	Future Use
EMEA	Tel Aviv II (TLV2)	87.58.78.198	Future Use
EMEA	Tel Aviv II (TLV2)	2a03:eec0:3010::3b	Future Use

For more information, please visit:

If you have any questions, please contact Zscaler Support via the “Support” link on the Zscaler Administration U.I. or contact us by phone:

USA Toll Free: +1-844-971-0010

Global Direct: +1-408-752-5885

Upcoming Extranet Virtual IP Address Announcement - zscalerthree.net

Thu, 26 Mar 2026 21:50:49 GMT

Dear Zscaler Customer,

Region	Location	Extranet VIP Addresses	Status
Americas	Chicago I (CHI1)	165.225.56.39	Future Use
Americas	Chicago I (CHI1)	165.225.60.35	Future Use
Americas	Chicago I (CHI1)	2605:4300:1314::71	Future Use
Americas	Chicago II (CHI2)	170.85.14.134	Future Use
Americas	Chicago II (CHI2)	2605:4300:2a10::3a	Future Use
Americas	Los Angeles II (QLA2)	170.85.230.134	Future Use
Americas	Los Angeles II (QLA2)	2605:4300:3710::3a	Future Use
Americas	Montreal I (YMQ1)	165.225.212.64	Future Use
Americas	Montreal I (YMQ1)	2605:4300:2711::42	Future Use
Americas	Santiago II (SCL2)	205.220.0.134	Live
Americas	Santiago II (SCL2)	2605:4300:e410::2b	Future Use
Americas	São Paulo IV (SAO4)	147.161.128.58	Future Use
Americas	São Paulo IV (SAO4)	2605:4300:e311::42	Future Use
Americas	Washington IV (WAS4)	170.85.86.134	Future Use
Americas	Washington IV (WAS4)	2605:4300:2d10::21	Future Use
APAC	Chennai III (MAA3)	167.103.70.134	Future Use
APAC	Chennai III (MAA3)	2400:7aa0:2410::e	Future Use
APAC	Chennai III (MAA3)	2400:7aa0:2411::36	Future Use
APAC	Kolkata I (CCU1)	205.220.16.134	Live
APAC	Kolkata I (CCU1)	2400:7aa0:2910::2b	Future Use
APAC	Kuala Lumpur II (KUL2)	205.220.70.134	Live
APAC	Kuala Lumpur II (KUL2)	2400:7aa0:2b10::2b	Future Use
APAC	Mumbai VI (BOM6)	167.103.186.34	Live
APAC	Mumbai VI (BOM6)	2400:7aa0:1319::32	Future Use
APAC	Mumbai VII (BOM7)	167.103.132.134	Future Use
APAC	Mumbai VII (BOM7)	2400:7aa0:2610::e	Future Use
APAC	Singapore V (SIN5)	167.103.60.134	Live
APAC	Singapore V (SIN5)	2400:7aa0:2310::3a	Future Use
APAC	Sydney V (SYD5)	101.2.224.134	Live
APAC	Sydney V (SYD5)	2400:7aa0:2c10::21	Future Use
APAC	Tokyo IV (TYO4)	101.2.202.37	Live
APAC	Tokyo IV (TYO4)	2400:7aa0:1e1a::20	Future Use
EMEA	Amsterdam III (AMS3)	87.58.118.134	Future Use
EMEA	Amsterdam III (AMS3)	2a03:eec0:3410::3a	Future Use
EMEA	Manchester II (MAN2)	194.9.106.134	Future Use
EMEA	Manchester II (MAN2)	2a03:eec0:2e10::3a	Future Use
EMEA	Tel Aviv II (TLV2)	87.58.78.134	Future Use
EMEA	Tel Aviv II (TLV2)	2a03:eec0:3010::3a	Future Use

For more information, please visit:

If you have any questions, please contact Zscaler Support via the “Support” link on the Zscaler Administration U.I. or contact us by phone:

USA Toll Free: +1-844-971-0010

Global Direct: +1-408-752-5885

Upcoming Extranet Virtual IP Address Announcement - zscalertwo.net

Thu, 26 Mar 2026 21:46:00 GMT

Dear Zscaler Customer,

Region	Location	Extranet VIP Addresses	Status
Americas	Chicago I (CHI1)	165.225.56.38	Future Use
Americas	Chicago I (CHI1)	165.225.60.34	Future Use
Americas	Chicago I (CHI1)	2605:4300:1313::74	Future Use
Americas	Chicago I (CHI1)	2605:4300:1314::70	Future Use
Americas	Chicago II (CHI2)	170.85.14.70	Future Use
Americas	Chicago II (CHI2)	170.85.15.75	Future Use
Americas	Chicago II (CHI2)	2605:4300:2a10::39	Future Use
Americas	Chicago II (CHI2)	2605:4300:2a10::46	Future Use
Americas	Los Angeles II (QLA2)	170.85.230.70	Future Use
Americas	Los Angeles II (QLA2)	2605:4300:3710::39	Future Use
Americas	Montreal I (YMQ1)	2605:4300:2711::41	Future Use
Americas	Santiago II (SCL2)	205.220.0.70	Live
Americas	Santiago II (SCL2)	2605:4300:e410::20	Future Use
Americas	São Paulo IV (SAO4)	147.161.128.57	Live
Americas	São Paulo IV (SAO4)	2605:4300:e311::41	Future Use
Americas	Washington IV (WAS4)	170.85.86.70	Future Use
Americas	Washington IV (WAS4)	2605:4300:2d10::1b	Future Use
APAC	Chennai III (MAA3)	167.103.70.70	Future Use
APAC	Chennai III (MAA3)	2400:7aa0:2410::d	Future Use
APAC	Kolkata I (CCU1)	205.220.16.70	Live
APAC	Kolkata I (CCU1)	2400:7aa0:2910::20	Future Use
APAC	Kuala Lumpur II (KUL2)	205.220.70.70	Live
APAC	Kuala Lumpur II (KUL2)	2400:7aa0:2b10::20	Future Use
APAC	Mumbai VII (BOM7)	167.103.132.70	Future Use
APAC	Mumbai VII (BOM7)	2400:7aa0:2610::d	Future Use
APAC	Singapore V (SIN5)	167.103.60.70	Live
APAC	Singapore V (SIN5)	2400:7aa0:2310::39	Future Use
APAC	Sydney V (SYD5)	101.2.224.70	Live
APAC	Sydney V (SYD5)	2400:7aa0:2c10::1b	Future Use
EMEA	Amsterdam III (AMS3)	87.58.118.70	Future Use
EMEA	Amsterdam III (AMS3)	2a03:eec0:3410::39	Future Use
EMEA	Madrid IV (MAD4)	2a03:eec0:3110::39	Future Use
EMEA	Manchester II (MAN2)	194.9.106.70	Future Use
EMEA	Manchester II (MAN2)	2a03:eec0:2e10::39	Future Use
EMEA	Tel Aviv II (TLV2)	87.58.78.70	Future Use
EMEA	Tel Aviv II (TLV2)	2a03:eec0:3010::39	Future Use

For more information, please visit:

If you have any questions, please contact Zscaler Support via the “Support” link on the Zscaler Administration U.I. or contact us by phone:

USA Toll Free: +1-844-971-0010

Global Direct: +1-408-752-5885

Upcoming Extranet Virtual IP Address Announcement - zscaler.net

Thu, 26 Mar 2026 21:41:32 GMT

Dear Zscaler Customer,

These new Extranet VIPs addresses can be used to terminate IPSec VPN tunnels with Extranet connectivity at the locations listed below. The VIPs will be displayed on the Zscaler Config page for ease of access and visibility. Users who do not wish to use Zscaler Extranet Application Support will not be impacted by this change.

Region	Location	Extranet VIP Addresses	Status
Americas	Chicago II (CHI2)	170.85.14.25	Future Use
Americas	Chicago II (CHI2)	2605:4300:2a10::38	Future Use
Americas	Los Angeles II (QLA2)	2605:4300:3710::38	Future Use
Americas	Los Angeles II (QLA2)	170.85.230.25	Future Use
Americas	Montreal I (YMQ1)	165.225.212.62	Future Use
Americas	Montreal I (YMQ1)	2605:4300:2711::40	Future Use
Americas	Santiago II (SCL2)	205.220.0.25	Live
Americas	Santiago II (SCL2)	2605:4300:e410::15	Future Use
Americas	São Paulo IV (SAO4)	147.161.128.56	Live
Americas	São Paulo IV (SAO4)	2605:4300:e311::40	Future Use
Americas	Washington IV (WAS4)	170.85.86.25	Future Use
Americas	Washington IV (WAS4)	2605:4300:2d10::15	Future Use
APAC	Chennai III (MAA3)	167.103.70.25	Future Use
APAC	Chennai III (MAA3)	2400:7aa0:2410::c	Future Use
APAC	Kolkata I (CCU1)	205.220.16.25	Live
APAC	Kolkata I (CCU1)	2400:7aa0:2910::15	Future Use
APAC	Kuala Lumpur II (KUL2)	205.220.70.25	Live
APAC	Kuala Lumpur II (KUL2)	2400:7aa0:2b10::15	Future Use
APAC	Mumbai VII (BOM7)	167.103.132.25	Future Use
APAC	Mumbai VII (BOM7)	2400:7aa0:2610::c	Future Use
APAC	Singapore V (SIN5)	167.103.60.25	Live
APAC	Singapore V (SIN5)	2400:7aa0:2310::38	Future Use
APAC	Sydney V (SYD5)	101.2.224.25	Live
APAC	Sydney V (SYD5)	2400:7aa0:2c10::15	Future Use
EMEA	Amsterdam III (AMS3)	87.58.118.25	Future Use
EMEA	Amsterdam III (AMS3)	2a03:eec0:3410::38	Future Use
EMEA	Manchester II (MAN2)	194.9.106.25	Future Use
EMEA	Manchester II (MAN2)	2a03:eec0:2e10::38	Future Use
EMEA	Tel Aviv II (TLV2)	87.58.78.25	Future Use
EMEA	Tel Aviv II (TLV2)	2a03:eec0:3010::38	Future Use

For more information, please visit:

If you have any questions, please contact Zscaler Support via the “Support” link on the Zscaler Administration U.I. or contact us by phone:

USA Toll Free: +1-844-971-0010

Global Direct: +1-408-752-5885

Frankfurt VI Datacenter Scheduled Maintenance - zscaler.net

Thu, 26 Mar 2026 19:02:37 GMT

Zscaler will be expanding its global data center footprint and performing maintenance at our Frankfurt VI (FRA6) data center. We expect minimal to no impact to services during the maintenance window.

Please update your firewall policy rules and any upstream Access Control Lists to allow all IP addresses for this DC

For more information, please visit:

Maintenance Window:

Start time is March 27, 3:00 pm PDT (March 27, 22:00 UTC)

End time is March 27, 10:00 pm PDT (March 28, 5:00 UTC)

Update 3/17: Extended maintenance

Update - Sat, 28 Mar 2026 05:24:45 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Planned Maintenance Activity for ZPA platform service - private.zscaler.com

Thu, 26 Mar 2026 07:49:39 GMT

Momentary disconnect and auto-reconnect of zcc.
Any active session will be disconnected and logged under ZPA User Activity logs as “MT_CLOSED_TLS_CONN_GONE_SCIM_USER_MOVED”

Important Note: No action is required from customers and this communication is only intended to inform in advance.

Please reach out to support if you have any questions or require further clarification.

Maintenance Window

02:00 - 05:30 UTC

15:00 - 19:00 UTC

Update - Sun, 29 Mar 2026 15:58:42 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Urgent Oslo III (OSL3) Datacenter Network Maintenance - zscaler.net, zscalertwo.net, zscloud.net, zscalerthree.net, private.zscaler.com

Wed, 25 Mar 2026 10:53:54 GMT

Zscaler will be performing hardware maintenance in the Oslo III (OSL3) Datacenter.

Maintenance window,
Start: 2026-03-25 13:00 CEST
End: 2026-03-25 16:00 CEST
(i.e. 2026-03-25 12:00 - 2026-03-25 15:00 UTC)

Update - Wed, 25 Mar 2026 13:58:57 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Mumbai VI (BOM6) Datacenter Network Maintenance - zscaler.net

Wed, 25 Mar 2026 09:07:23 GMT

Zscaler will be performing hardware maintenance in Mumbai VI (BOM6) Datacenter .

Maintenance window:
Start: 2026-03-27 12:30 UTC
End: 2026-03-27 14:30 UTC
(Local Time 2026-03-27 18:00 - 2026-03-27 20:00 IST)

Update - Fri, 27 Mar 2026 19:23:52 UTC

This activity has been completed at 2026-03-27 14:30 UTC. Please contact Zscaler Support if you have additional questions.

Los Angeles I Datacenter Scheduled Maintenance - zscalertwo.net

Wed, 25 Mar 2026 07:26:12 GMT

Zscaler will be performing hardware maintenance in Los Angeles I (QLA1) Datacenter.

Maintenance window:
Start: 2026-03-26 02:00 UTC
End: 2026-03-26 04:00 UTC
(Local Time 2026-03-25 19:00 - 2026-03-25 21:00)

Update - Thu, 26 Mar 2026 03:59:14 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Reminder Notification for Upcoming Data Center Expansion - zscaler.net, zscalertwo.net, zscloud.net, zscalerthree.net, private.zscaler.com, zpatwo.net

Mon, 23 Mar 2026 19:14:53 GMT

Dear Customer,

In accordance with the Zscaler Service Continuity Policy and as previously announced via email notification and Trust on February 4, 2026, we would like to remind you of the upcoming data center expansion at the location listed below. These would be effective anytime on or after April 5, 2026.

Please update your firewall policy rules and any upstream access control lists to allow the new IP address ranges to avoid any service disruption.

Region	Location	CIDR	Notes
APAC	Mumbai VI	101.2.248.0/23	Expansion of existing DC

For more information, please visit:

https://config.zscaler.com/zscaler.net/hubs

If you have any questions, please contact Zscaler Support via the “Support” link on the Zscaler Administration U.I. or contact us by phone:

USA Toll Free: +1-844-971-0010

Global Direct: +1-408-752-5885

Reminder Notification for Additions of HUB IP Address Ranges - zscaler.net, zscalerone.net, zscalertwo.net, zscloud.net, zscalerthree.net, zdxcloud.net

Mon, 23 Mar 2026 19:04:32 GMT

Dear Customer,

In accordance with Zscaler Service Continuity Policy and as previously announced via Trust and email notification sent on February 4, 2026, we would like to remind you of the upcoming changes to HUB IP address ranges as listed below. The services through the new IP address range will be available anytime on or after April 5, 2026.

CIDR	Notes
205.220.118.0/23	New addition to Required Hub IP addresses
101.2.244.0/23	New addition to Required Hub IP addresses
199.168.148.0/22	Removed from Recommended section

Please update your firewall policy rules and any upstream access control lists to allow the new IP address range to avoid any service disruption.

For more information, please visit:

https://config.zscaler.com/zscloud.net/hubs

https://config.zscaler.com/zscalerone.net/hubs

https://config.zscaler.com/zscalertwo.net/hubs

https://config.zscaler.com/zscalerthree.net/hubs

https://config.zscaler.com/zdxcloud.net/hubs

If you have any questions, please contact Zscaler Support via the “Support” link on the Zscaler Administration U.I. or contact us by phone:

USA Toll Free: +1-844-971-0010

Global Direct: +1-408-752-5885

San Francisco IV (SJC4) Datacenter Network Maintenance - zscalertwo.net, zscalerthree.net

Mon, 23 Mar 2026 02:12:24 GMT

Zscaler will be performing hardware maintenance in San Francisco IV (SJC4) Datacenter.

Maintenance window:
Start: 2026-03-25 03:30 UTC
End: 2026-03-25 06:30 UTC
(Local Time 2026-03-24 20:30 - 2026-03-24 23:30)

Update - Wed, 25 Mar 2026 04:00:53 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Rio de Janeiro I Datacenter Scheduled Maintenance - IPv6 Enablement - zscaler.net, zscalertwo.net, zscloud.net, zscalerthree.net

Fri, 20 Mar 2026 18:55:07 GMT

Zscaler will be enabling IPv6 at our Rio de Janeiro I (RIO1) Data Center. During the maintenance window the services through RIO1 Data Center will be restarted in phases to minimize the service impact.

Other Zscaler sites and Zscaler Services will continue to operate normally.

Maintenance Window:

Start time is March 31, 2:00 pm PDT (March 31, 21:00 UTC)

End time is March 31, 800 pm PDT (April 1, 3:00 UTC)

Update 3/23: Maintenance Postponed
Update 3/30: Maintenance Rescheduled
Update 3/31: Extended time

Update - Wed, 01 Apr 2026 03:03:29 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Atlanta III Datacenter Scheduled Maintenance - IPv6 Enablement - zscaler.net, zscalertwo.net, zscloud.net

Fri, 20 Mar 2026 18:46:13 GMT

Zscaler will be enabling IPv6 at our Atlanta III (ATL3) Data Center. During the maintenance window the services through ATL3 Data Center will be restarted in phases to minimize the service impact.

Other Zscaler sites and Zscaler Services will continue to operate normally.

Maintenance Window:

Start time is April 6, 6:00 pm PDT (April 7, 1:00 UTC)

End time is April 6, 11:00 pm PDT (April 7, 6:00 UTC)

Update 3/23: Maintenance Postponed
Update 4/3: Maintenance Rescheduled

Update - Tue, 07 Apr 2026 04:51:45 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Urgent Maintenance - zscaler.net

Fri, 20 Mar 2026 16:44:11 GMT

The Zscaler Site Reliability Engineering team will be performing an urgent maintenance on the Atlanta II, Atlanta III, Los Angeles, Los Angeles II datacenter on the zscaler.net cloud. This maintenance can take up to 2 hours to complete. We expect minimal to no impact to services during the maintenance window. All logs will be collected and available after maintenance is complete. Please contact Zscaler Support if you have additional questions.

Update - Fri, 20 Mar 2026 18:06:31 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Urgent Maintenance on Dusseldorf 1 and Frankfurt 6 datacenters - zscaler.net

Fri, 20 Mar 2026 06:15:54 GMT

The Zscaler Site Reliability Engineering team will be performing an urgent maintenance on the Dusseldorf 1 and Frankfurt 6 datacenters on the zscaler.net cloud. This maintenance is scheduled for Thursday at 11:30 PM Pacific Time on March 19, 2026 (Friday, March 20, 2026 6:30 AM UTC), and can take up to 1 hours to complete. We expect minimal to no impact to services during the maintenance window. All logs will be collected and available after maintenance is complete. Please contact Zscaler Support if you have additional questions.

Update - Fri, 20 Mar 2026 07:45:21 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Urgent Maintenance - AMER Region - zscalertwo.net

Fri, 20 Mar 2026 00:27:58 GMT

The Zscaler Site Reliability Engineering team will be performing an urgent maintenance on the AMER region's datacenters of zscalertwo.net cloud. This maintenance is scheduled for Thursday at 9:00 PM Pacific Time on Mar 19, 2026 (Friday, Mar 20, 2026 4:00 AM UTC), and can take up to 3 hours to complete. We expect minimal to no impact to services during the maintenance window. All logs will be collected and available after maintenance is complete. Please contact Zscaler Support if you have additional questions.

Urgent Maintenance on New York 3 and 4 datacenters - zscaler.net

Thu, 19 Mar 2026 08:09:13 GMT

The Zscaler Site Reliability Engineering team will be performing an urgent maintenance on the New York 3 and 4 datacenter on the zscaler.net cloud. This maintenance is scheduled for Thursday at 1:30 AM Pacific Time on March 19, 2026 (Thursday, March 19, 2026 8:30 AM UTC), and can take up to 3 hours to complete. We expect minimal to no impact to services during the maintenance window. All logs will be collected and available after maintenance is complete. Please contact Zscaler Support if you have additional questions.

Update - Thu, 19 Mar 2026 09:19:42 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Planned Maintenance Activity for ZPA authentication service - private.zscaler.com

Thu, 19 Mar 2026 09:43:15 GMT

We will be performing planned maintenance on our ZPA authentication platform infrastructure to enhance availability and resiliency. Some customers may witness below impact during this maintenance window:

Brief retries or elevated latency for new auth requests might be seen during connection re‑establishment.
Transient errors during auth is possible; retry should succeed.

Important Note: No action is required from customers and this communication is only intended to inform in advance.

Please reach out to support if you have any questions or require further clarification.

Update - Sat, 21 Mar 2026 03:18:18 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Sydney V Data Center online - zscaler.net, zscalertwo.net, zscloud.net, zscalerthree.net

Wed, 18 Mar 2026 21:34:23 GMT

Dear Zscaler Customer,

You are receiving this notice in accordance with the Zscaler Service Continuity Policy.

As part of our effort to enhance our Security Cloud’s robustness and performance, Zscaler will be bringing online a new Sydney V (SYD5) data center. This facility will be added to the public resolution service (Auto Geo Proximity) on March 19, 2026

What if I have more questions?

Contact Zscaler Support via the “Support” link at the top-right of the Zscaler Administration U.I page.

Or contact us by phone:

USA Toll-Free: +1-844-971-0010

Global Direct: +1-408-752-5885

Update - Fri, 20 Mar 2026 02:59:02 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Planned Maintenance Activity for ZPA platform service - private.zscaler.com

Wed, 18 Mar 2026 10:46:13 GMT

Momentary disconnect and auto-reconnect of zcc.
Any active session will be disconnected and logged under ZPA User Activity logs as “MT_CLOSED_TLS_CONN_GONE_SCIM_USER_MOVED”

Important Note: No action is required from customers and this communication is only intended to inform in advance.

Please reach out to support if you have any questions or require further clarification.

Maintenance Window

02:00 - 05:30 UTC

15:00 - 19:00 UTC

Update - Sun, 22 Mar 2026 15:40:42 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

San Francisco IV (SJC4) Datacenter Network Maintenance - zscaler.net, zscalertwo.net, zscloud.net, zscalerthree.net, private.zscaler.com

Tue, 17 Mar 2026 18:40:20 GMT

Zscaler will be performing hardware maintenance in San Francisco IV (SJC4) Datacenter.

Maintenance window:
Start: 2026-03-19 06:00 UTC
End: 2026-03-19 14:00 UTC
(Local Time 2026-03-18 23:00 - 2026-03-19 07:00)

Update - Thu, 19 Mar 2026 11:59:25 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Release Upgrade for Zscaler Data Security Posture Management (DSPM) - app.zsdpc.net

Mon, 16 Mar 2026 04:07:57 GMT

Zscaler Data Posture Control (DSPM) Operations team will be performing a planned upgrade activity on March 16th, 2026. These service updates are applied in regional off-peak hours and should not result in any downtime for customers. Please reach out to Customer support for more information about the changes.

Update - Mon, 16 Mar 2026 05:52:18 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Urgent Maintenance - VZEN nodes - zscalertwo.net

Sun, 15 Mar 2026 01:35:11 GMT

The Zscaler Site Reliability Engineering team will be performing an urgent maintenance on the VZEN nodes in zscalertwo.net cloud. The maintenance will happen across VZEN nodes during the window, beginning at 06:30 PM Pacific Time on Saturday, March 14, 2026 (Sunday, March 15, 2026 01:30 AM UTC) and continuing for up to 5 hours. VZEN's services will be restarted as part of this change and service for your end users might be disrupted during the window. All logs will be collected and available after maintenance is complete.

Update - Sun, 15 Mar 2026 06:26:43 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Urgent Maintenance on Zurich datacenter - zscloud.net

Sat, 14 Mar 2026 16:55:41 GMT

The Zscaler Site Reliability Engineering team will be performing an urgent maintenance on the Zurich datacenter on the zscloud.net cloud. This maintenance is scheduled for Saturday at 1:00 PM Pacific Time on March 14, 2026 (Saturday, March 14, 2026 8:00 PM UTC), and can take up to 3 hours to complete. We expect minimal to no impact to services during the maintenance window. All logs will be collected and available after maintenance is complete. Please contact Zscaler Support if you have additional questions.

Update - Sat, 14 Mar 2026 21:05:26 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Scheduled Maintenance Extended - zscaler.net

Sat, 14 Mar 2026 05:49:48 GMT

The Zscaler Site Reliability Engineering team will be extending the scheduled maintenance of the zscaler.net cloud by 2 hour. As part of our standard maintenance process, all logs will be collected and available after maintenance has been completed. Please contact Zscaler Support if you have additional questions.

Update - Sat, 14 Mar 2026 08:00:18 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Dubai I Datacenter Scheduled Maintenance - zscaler.net, zscalertwo.net, zscalerthree.net

Sat, 14 Mar 2026 01:31:40 GMT

Zscaler will be enabling IPv6 at our Dubai I (DXB1) Data Center. During the maintenance window the services through DXB1 Data Center will be restarted in phases to minimize the service impact.

Other Zscaler sites and Zscaler Services will continue to operate normally.

Maintenance Window:

Start time is March 19, 9:00 am PST (March 19, 16:00 UTC)

End time is March 19, 3:00 pm PST (March 19, 22:00 UTC)

Update - Thu, 19 Mar 2026 21:39:47 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Dubai I Datacenter Scheduled Maintenance- Service Expansion - zscloud.net

Sat, 14 Mar 2026 01:29:26 GMT

Zscaler will be expanding its global data center footprint and performing maintenance at our Dubai I (DXB1) data center. We expect minimal to no impact to services during the maintenance window.

Please update your firewall policy rules and any upstream Access Control Lists to allow all IP addresses for this DC

For more information, please visit:

Maintenance Window:

Start time is April 7, 9:00 am PDT (April 7, 16:00 UTC)

End time is April 7, 2:00 pm PDT (April 7, 21:00 UTC)

Update 3/19: Maintenance postponed
Update 4/3: Maintenance Rescheduled

Update - Tue, 07 Apr 2026 20:53:08 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Upcoming Data Center Expansions - zscaler.net, zscalertwo.net, zscloud.net, zscalerthree.net, private.zscaler.com, zpatwo.net

Sat, 14 Mar 2026 00:08:35 GMT

Dear Zscaler Customer,

In accordance with Zscaler Service Continuity Policy and per email notification sent on March 13, 2026, we would like to notify you of the upcoming data center expansions at the locations listed below. These would be available anytime on or after May 12, 2026; 60 days or more from the date the first email notification is sent.

Please update your firewall policy rules and any upstream Access Control Lists (ACLs) to allow the new IP address ranges to avoid any service disruption.

Region	Location	CIDR	Notes
Americas	New York IV	198.14.96.0/23	Expansion of existing data center
Americas	New York IV	198.14.98.0/23	Expansion of existing data center
Americas	New York IV	198.14.100.0/23	Expansion of existing data center
Americas	New York IV	198.14.102.0/23	Expansion of existing data center
EMEA	Paris IV	137.31.8.0/23	Expansion of existing data center
EMEA	Paris IV	137.31.10.0/23	Expansion of existing data center
EMEA	Paris II	137.31.12.0/23	Expansion of existing data center

For more information, please visit:

If you have any questions, please contact Zscaler Support via the “Support” link on the Zscaler Administration U.I. or contact us by phone:

USA Toll Free: +1-844-971-0010

Global Direct: +1-408-752-5885

Singapore IV Datacenter Scheduled Maintenance - zscaler.net, zscloud.net

Fri, 13 Mar 2026 20:54:58 GMT

Zscaler will be enabling IPv6 at our Singapore IV (SIN4) Data Center. During the maintenance window the services through SIN4 Data Center will be restarted in phases to minimize the service impact.

Other Zscaler sites and Zscaler Services will continue to operate normally.

Maintenance Window:

Start time is March 18, 9:00 am PST (March 18, 16:00 UTC)

End time is March 18, 3:00 pm PST (March 18, 22:00 UTC)

Update - Wed, 18 Mar 2026 22:18:40 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Manchester I Datacenter Scheduled Maintenance - Service Expansion - zscalertwo.net

Fri, 13 Mar 2026 17:25:04 GMT

Zscaler will be expanding its global data center footprint and performing maintenance at our Manchester I (MAN1) data center. We expect minimal to no impact to services during the maintenance window.

Please update your firewall policy rules and any upstream Access Control Lists to allow all IP addresses for this DC

For more information, please visit:

Maintenance Window:

Start time is April 2, 200 pm PDT (April 2, 21:00 UTC)

End time is April 2, 7:00 pm PDT (April 3, 200 UTC)

Update 3/18: Maintenance postponed
Update 3/31: Maintenance rescheduled
Update 4/1: Time Adjustment
Update 4/2: Extended Maintenance

Update - Fri, 03 Apr 2026 01:25:43 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Manchester I Datacenter Scheduled Maintenance - zscalertwo.net

Fri, 13 Mar 2026 17:23:30 GMT

Zscaler will be enabling IPv6 at our Manchester I (MAN1) Data Center. During the maintenance window the services through MAN1 Data Center will be restarted in phases to minimize the service impact.

Other Zscaler sites and Zscaler Services will continue to operate normally.

Maintenance Window:

Start time is March 18, 11:00 am PST (March 18, 18:00 UTC)

End time is March 18, 4:00 pm PST (March 18, 23:00 UTC)

Update - Wed, 18 Mar 2026 20:47:58 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Vienna I Datacenter Scheduled Maintenance - zscloud.net, zscalerthree.net

Fri, 13 Mar 2026 17:09:15 GMT

Zscaler will be enabling IPv6 at our Vienna I (VIE1) Data Center. During the maintenance window the services through VIE1 Data Center will be restarted in phases to minimize the service impact.

Other Zscaler sites and Zscaler Services will continue to operate normally.

Maintenance Window:

Start time is March 16, 1:00 pm PST (March 16, 8:00 UTC)

End time is March 16, 7:00 pm PST (March 17, 2:00 UTC)

Update - Tue, 17 Mar 2026 00:20:57 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Manchester I Datacenter Scheduled Maintenance - zscloud.net

Fri, 13 Mar 2026 16:57:31 GMT

Zscaler will be enabling IPv6 at our Manchester I (MAN1) Data Center. During the maintenance window the services through MAN1 Data Center will be restarted in phases to minimize the service impact.

Other Zscaler sites and Zscaler Services will continue to operate normally.

Maintenance Window:

Start time is March 17, 11:00 am PST (March 17, 18:00 UTC)

End time is March 17, 6:00 pm PST (March 18, 1:00 UTC)

Update 3/17: Extending maintenance

Update - Wed, 18 Mar 2026 01:01:38 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Manchester I Datacenter Scheduled Maintenance - Service Expansion - zscloud.net

Fri, 13 Mar 2026 16:55:47 GMT

Zscaler will be expanding its global data center footprint and performing maintenance at our Manchester I (MAN1) data center. We expect minimal to no impact to services during the maintenance window.

Please update your firewall policy rules and any upstream Access Control Lists to allow all IP addresses for this DC

For more information, please visit:

Maintenance Window:

Start time is April 2, 2:00 pm PDT (April 2, 21:00 UTC)

End time is April 2, 7:00 pm PDT (April 3, 2:00 UTC)

Update 3/17: Extending Maintenance
Update 3/17: Maintenance Postponed
Update 3/31: Maintenance Rescheduled
Update 4/1: Time Adjustment
Update 4/2: Extending Maintenance

Update - Fri, 03 Apr 2026 01:24:30 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Taipei II Datacenter Scheduled Maintenance - zscaler.net, zscalertwo.net, zscalerthree.net

Fri, 13 Mar 2026 16:47:13 GMT

Zscaler will be enabling IPv6 at our Taipei II (TPE2) Data Center. During the maintenance window the services through TPE2 Data Center will be restarted in phases to minimize the service impact.

Other Zscaler sites and Zscaler Services will continue to operate normally.

Maintenance Window:

Start time is March 17, 9:00 am PST (March 17, 16:00 UTC)

End time is March 17, 2:00 pm PST (March 17, 21:00 UTC)

Update - Tue, 17 Mar 2026 21:46:05 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Taipei II Datacenter Scheduled Maintenance - Service Expansion - zscloud.net

Fri, 13 Mar 2026 16:43:01 GMT

Zscaler will be expanding its global data center footprint and performing maintenance at our Taipei II (TPE2) data center. We expect minimal to no impact to services during the maintenance window.

Please update your firewall policy rules and any upstream Access Control Lists to allow all IP addresses for this DC

For more information, please visit:

Maintenance Window:

Start time is April 8, 9:00 am PDT (April 8, 16:00 UTC)

End time is April 8, 4:00 pm PDT (April 8, 23:00 UTC)

Update 3/17: Maintenance Postponed
Update 4/3: Maintenance Rescheduled
Update 4/8: Maintenance Extended

Update - Wed, 08 Apr 2026 22:32:14 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Paris IV Datacenter Scheduled Maintenance - zscalertwo.net, zscloud.net, zscalerthree.net

Fri, 13 Mar 2026 16:20:07 GMT

Zscaler will be enabling IPv6 at our Paris IV (PAR4) Data Center. During the maintenance window the services through PAR4 Data Center will be restarted in phases to minimize the service impact.

Other Zscaler sites and Zscaler Services will continue to operate normally.

Maintenance Window:

Start time is March 16, 10:00 am PST (March 16, 17:00 UTC)

End time is March 16, 3:00 pm PST (March 16, 22:00 UTC)

Update - Mon, 16 Mar 2026 20:03:56 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

China Premium and China Premium Plus Datacenters Network Maintenance - zscaler.net, zscalertwo.net, zscloud.net, zscalerthree.net

Mon, 16 Mar 2026 18:22:20 GMT

Beijing IV, Beijing V and Shanghai VI DCs network providers have advised maintenance work as below. During the maintenance window, China Premium and China Premium Plus services within these data centres may experience intermittent disconnections.

Start Time: 2026-03-20 18:00:00 UTC
End Time: 2026-03-20 20:00:00 UTC
(Datacenters' Local Time 2026-03-21 02:00 - 2026-03-21 04:00 China Standard Time (UTC+8:00))

Reason of Maintenance: Provider advised maintenance.
Impact During Maintenance: Intermittent connectivity might be observed during the maintenance period

Update - Fri, 20 Mar 2026 19:39:55 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Urgent Maintenance on Los Angeles, Los Angeles II, Seattle, San Francisco IV, and Denver III datacenters - zscalertwo.net

Thu, 12 Mar 2026 23:02:39 GMT

The Zscaler Site Reliability Engineering team will be performing an urgent maintenance on the Los Angeles, Los Angeles II, Seattle, San Francisco IV, and Denver III datacenters on the zscalertwo.net cloud. This maintenance is scheduled for Thursday at 11:00 PM Pacific Time on Mar 12, 2026 (Friday, Mar 13, 2026 06:00 AM UTC), and can take up to 3 hours to complete. We expect minimal to no impact to services during the maintenance window. All logs will be collected and available after maintenance is complete. Please contact Zscaler Support if you have additional questions.

Update - Fri, 13 Mar 2026 09:06:34 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Urgent Maintenance on Atlanta II, Atlanta III, Washington DC, Washington DC IV, Miami III, and Boston I datacenters - zscalertwo.net

Thu, 12 Mar 2026 22:42:42 GMT

The Zscaler Site Reliability Engineering team will be performing an urgent maintenance on the Atlanta II, Atlanta III, Washington DC, Washington DC IV, Miami III, and Boston I datacenters on the zscalertwo.net cloud. This maintenance is scheduled for Thursday at 5:00 PM Pacific Time on Mar 12, 2026 (Friday, Mar 13, 2026 12:00 AM UTC), and can take up to 3 hours to complete. We expect minimal to no impact to services during the maintenance window. All logs will be collected and available after maintenance is complete. Please contact Zscaler Support if you have additional questions.

Update - Fri, 13 Mar 2026 02:37:42 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Planned Maintenance Activity for ZPA authentication service - zpatwo.net

Fri, 13 Mar 2026 09:49:30 GMT

Brief retries or elevated latency for new auth requests might be seen during connection re‑establishment.
Transient errors during auth is possible; retry should succeed.

Important Note: No action is required from customers and this communication is only intended to inform in advance.

Please reach out to support if you have any questions or require further clarification.

Update - Sun, 15 Mar 2026 16:15:56 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Release Upgrade for Zscaler Data Security Posture Management (DSPM) - app.eu.zsdpc.net

Thu, 12 Mar 2026 04:00:26 GMT

Zscaler Data Posture Control (DSPM) Operations team will be performing a planned upgrade activity on March 12th, 2026. These service updates are applied in regional off-peak hours and should not result in any downtime for customers. Please reach out to Customer support for more information about the changes.

Update - Thu, 12 Mar 2026 06:03:05 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Rio de Janeiro I Datacenter Scheduled Maintenance - zscalertwo.net

Wed, 11 Mar 2026 19:54:37 GMT

Zscaler will be expanding its global data center footprint and performing maintenance at our Rio de Janeiro I (RIO1) data center. We expect minimal to no impact to services during the maintenance window.

Please update your firewall policy rules and any upstream Access Control Lists to allow all IP addresses for this DC

For more information, please visit:

Maintenance Window:

Start time is March 12, 6:00 pm PST (March 13, 1:00 UTC)

End time is March 12, 11:00 pm PST (March 13, 6:00 UTC)

Update - Fri, 13 Mar 2026 06:04:13 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Urgent Maintenance - zscalerone.net

Wed, 11 Mar 2026 16:15:36 GMT

The Zscaler Site Reliability Engineering team will be performing an urgent maintenance on zscalerone.net cloud. This maintenance is scheduled for Thursday at 1:00 AM Pacific Time on Mar 12, 2026 (Thursday, Mar 12, 2026 8:00 AM UTC), and can take up to 3 hours to complete.

During maintenance, the Zscaler Client Connector Portal will be in maintenance mode. As a result, access to policy management and reporting will not be available. Existing devices that are already enrolled will not be affected, but there may be intermittent failures in registering new devices. Rest assured, all logs will be collected and made available once the maintenance mode window concludes.

Update - Thu, 12 Mar 2026 10:57:34 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Planned Maintenance Activity for ZPA platform service - private.zscaler.com

Thu, 12 Mar 2026 06:08:28 GMT

Momentary disconnect and auto-reconnect of zcc.
Any active session will be disconnected and logged under ZPA User Activity logs as “MT_CLOSED_TLS_CONN_GONE_SCIM_USER_MOVED”

Important Note: No action is required from customers and this communication is only intended to inform in advance.

Please reach out to support if you have any questions or require further clarification.

Update - Sun, 15 Mar 2026 05:02:19 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Urgent Maintenance on Dallas I, Dallas II, New York III, New York IV datacenters - zscalerthree.net

Wed, 11 Mar 2026 05:44:23 GMT

The Zscaler Site Reliability Engineering team will be performing an urgent maintenance on the Dallas I, Dallas II, New York III, New York IV datacenters on the zscalerthree.net cloud. This maintenance can take up to 2 hours to complete. We expect minimal to no impact to services during the maintenance window. All logs will be collected and available after maintenance is complete. Please contact Zscaler Support if you have additional questions.

Update - Wed, 11 Mar 2026 10:02:18 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Scheduled Maintenance on AMER region's Egress NAT nodes - zscaler.net, zscalerone.net, zscalertwo.net, zscloud.net, zscalerthree.net

Wed, 11 Mar 2026 00:48:12 GMT

The Zscaler Site Reliability Engineering team will be performing a scheduled maintenance on the AMER region's Egress NAT nodes on zscalerone.net, zscalertwo.net, zscalerthree.net, zscloud.net and zscaler.net clouds. This maintenance is scheduled for Saturday at 6:00 PM Pacific Time on Mar 14, 2026 (Sunday, Mar 15, 2026 01:00 AM UTC), and can take up to 4 hours to complete. We expect minimal to no impact to services during the maintenance window. All logs will be collected and available after maintenance is complete. Please contact Zscaler Support if you have additional questions.

Latest Update - Fri, 10 Apr 2026 15:00:57 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Update - Wed, 11 Mar 2026 23:50:18 UTC

This maintenance is now scheduled for Sunday at 2:00 AM Pacific Time on Mar 15, 2026 (Sunday, Mar 15, 2026 09:00 AM UTC), and can take up to 4 hours to complete.

Update - Fri, 10 Apr 2026 15:00:57 UTC

This activity was completed within the mentioned timeframe. Please contact Zscaler Support if you have additional questions.

Scheduled Maintenance on APAC region's Egress NAT nodes - zscaler.net, zscalerone.net, zscalertwo.net, zscloud.net, zscalerthree.net

Wed, 11 Mar 2026 00:43:53 GMT

The Zscaler Site Reliability Engineering team will be performing a scheduled maintenance on the APAC region's Egress NAT nodes on zscalerone.net, zscalertwo.net, zscalerthree.net, zscloud.net and zscaler.net clouds. This maintenance is scheduled for Saturday at 6:00 AM Pacific Time on Mar 14, 2026 (Saturday, Mar 14, 2026 01:00 PM UTC), and can take up to 4 hours to complete. We expect minimal to no impact to services during the maintenance window. All logs will be collected and available after maintenance is complete. Please contact Zscaler Support if you have additional questions.

Update - Sat, 14 Mar 2026 15:30:48 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Scheduled Maintenance on EMEA region's Egress NAT nodes - zscaler.net, zscalerone.net, zscalertwo.net, zscloud.net, zscalerthree.net

Wed, 11 Mar 2026 00:40:59 GMT

The Zscaler Site Reliability Engineering team will be performing a scheduled maintenance on the EMEA region's Egress NAT nodes on zscalerone.net, zscalertwo.net, zscalerthree.net, zscloud.net and zscaler.net clouds. This maintenance is scheduled for Friday at 6:00 PM Pacific Time on Mar 13, 2026 (Saturday, Mar 14, 2026 01:00 AM UTC), and can take up to 4 hours to complete. We expect minimal to no impact to services during the maintenance window. All logs will be collected and available after maintenance is complete. Please contact Zscaler Support if you have additional questions.

Latest Update - Sun, 15 Mar 2026 06:28:13 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Update - Wed, 11 Mar 2026 23:43:08 UTC

This maintenance is now scheduled for Saturday at 6:00 PM Pacific Time on Mar 14, 2026 (Sunday, Mar 15, 2026 01:00 AM UTC), and can take up to 4 hours to complete.

Update - Sun, 15 Mar 2026 06:28:13 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Scheduled Maintenance on Oceania region's Egress NAT nodes - zscaler.net, zscalerone.net, zscalertwo.net, zscloud.net, zscalerthree.net

Wed, 11 Mar 2026 00:37:42 GMT

The Zscaler Site Reliability Engineering team will be performing a scheduled maintenance on the Oceania region's Egress NAT nodes on zscalerone.net, zscalertwo.net, zscalerthree.net, zscloud.net and zscaler.net clouds. This maintenance is scheduled for Friday at 2:00 AM Pacific Time on Mar 13, 2026 (Friday, Mar 13, 2026 09:00 AM UTC), and can take up to 4 hours to complete. We expect minimal to no impact to services during the maintenance window. All logs will be collected and available after maintenance is complete. Please contact Zscaler Support if you have additional questions.

Latest Update - Sat, 14 Mar 2026 12:56:39 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Update - Wed, 11 Mar 2026 23:27:26 UTC

This maintenance is now scheduled for Saturday at 2:00 AM Pacific Time on Mar 14, 2026 (Saturday, Mar 14, 2026 09:00 AM UTC), and can take up to 4 hours to complete.

Update - Sat, 14 Mar 2026 12:56:39 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Manchester I Datacenter Scheduled Maintenance - zscalerthree.net

Tue, 10 Mar 2026 20:54:21 GMT

Zscaler will be enabling IPv6 at our Manchester I (MAN1) Data Center. During the maintenance window the services through MAN1 Data Center will be restarted in phases to minimize the service impact.

Other Zscaler sites and Zscaler Services will continue to operate normally.

Maintenance Window:

Start time is March 13, 11:00 am PST (March 13, 18:00 UTC)

End time is March 13, 800 pm PST (March 14, 03:00 UTC)

Update 3/13/26: Extending Maintenance
Update 3/13/26: Extending Maintenance

Update - Sat, 14 Mar 2026 03:02:43 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Manchester I Datacenter Scheduled Maintenance - zscaler.net

Tue, 10 Mar 2026 20:52:36 GMT

Zscaler will be expanding its global data center footprint and performing maintenance at our Manchester I (MAN1) data center. We expect minimal to no impact to services during the maintenance window.

Please update your firewall policy rules and any upstream Access Control Lists to allow all IP addresses for this DC

For more information, please visit:

Maintenance Window:

Start time is March 13, 11:00 am PST (March 13, 18:00 UTC)

End time is March 13, 4:00 pm PST (March 13, 23:00 UTC)

Update - Fri, 13 Mar 2026 21:48:10 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Singapore IV Datacenter Scheduled Maintenance - zscalertwo.net

Tue, 10 Mar 2026 18:25:39 GMT

Zscaler will be enabling IPv6 at our Singapore IV (SIN4) Data Center. During the maintenance window the services through SIN4 Data Center will be restarted in phases to minimize the service impact.

Other Zscaler sites and Zscaler Services will continue to operate normally.

Maintenance Window:

Start time is March 12, 9:00 am PST (March 12, 16:00 UTC)

End time is March 12, 2:00 pm PST (March 12, 21:00 UTC)

Update - Thu, 12 Mar 2026 21:11:37 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Singapore IV Datacenter Scheduled Maintenance - zscalerthree.net

Tue, 10 Mar 2026 18:23:18 GMT

Zscaler will be expanding its global data center footprint and performing planned maintenance at our Singapore IV (SIN4) data center. We expect minimal to no impact to services during the maintenance window.

Please update your firewall policy rules and any upstream access lists (ACLs) to allow all IP address ranges for this DC.

For more information, please visit:

Maintenance Window:

Start time is March 12, 9:00 am PST (March 12, 16:00 UTC)

End time is March 12, 2:00 pm PST (March 12, 21:00 UTC)

Update - Thu, 12 Mar 2026 21:12:25 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Hong Kong III Datacenter Scheduled Maintenance - zscaler.net, zscloud.net, zscalerthree.net

Tue, 10 Mar 2026 18:14:16 GMT

Zscaler will be enabling IPv6 at our Hong Kong III (HKG3) Data Center. During the maintenance window the services through HKG3 Data Center will be restarted in phases to minimize the service impact.

Other Zscaler sites and Zscaler Services will continue to operate normally.

Maintenance Window:

Start time is March 19, 7:00 am PST (March 19, 14:00 UTC)

End time is March 19, 2:00 pm PST (March 19, 21:00 UTC)

Update 3/12: Extending Maintenance
Update 3/12: Maintenance Postponed
Update 3/13: Maintenance Rescheduled
Update 3/19: Extending Maintenance
Update 3/19: Maintenance Postponed

Hong Kong III Datacenter Scheduled Maintenance - zscalertwo.net

Tue, 10 Mar 2026 18:11:34 GMT

Zscaler will be expanding its global data center footprint and performing planned maintenance at our Hong Kong III (HKG3) data center. We expect minimal to no impact to services during the maintenance window.

Please update your firewall policy rules and any upstream Access Control Lists to allow all IP addresses for this DC

For more information, please visit:

Maintenance Window:

Start time is March 12, 7:00 am PST (March 12, 14:00 UTC)

End time is March 12, 1:00 pm PST (March 12, 20:00 UTC)

Update 3/12: Extended Maintenance

Update - Thu, 12 Mar 2026 20:24:25 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Mumbai VI Datacenter Scheduled Maintenance - zscalerthree.net

Mon, 09 Mar 2026 23:41:21 GMT

Zscaler will be expanding its global data center footprint and performing planned maintenance at our Mumbai VI (BOM6) data center. We expect minimal to no impact to services during the maintenance window.

Please update your firewall policy rules and any upstream Access Control Lists to allow all IP addresses for this DC

For more information, please visit:

Maintenance Window:

Start time is March 11, 10:30 am PST (March 11, 17:30 UTC)

End time is March 11, 4:30 pm PST (March 11, 23:30 UTC)

Update - Thu, 12 Mar 2026 00:12:54 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Singapore V Datacenter Scheduled Maintenance - zscaler.net, zscalertwo.net, zscloud.net

Mon, 09 Mar 2026 17:31:11 GMT

Zscaler will be enabling IPv6 at our Singapore V (SIN5) Data Center. During the maintenance window the services through SIN5 Data Center will be restarted in phases to minimize the service impact.

Other Zscaler sites and Zscaler Services will continue to operate normally.

Maintenance Window:

Start time is March 10, 10:30 am PST (March 10, 17:30 UTC)

End time is March 10, 5:00 pm PST (March 11, 00:00 UTC)

Update 3/10: Extending Maintenance

Update - Tue, 10 Mar 2026 23:59:37 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Singapore V Datacenter Scheduled Maintenance - zscalerthree.net

Mon, 09 Mar 2026 17:26:02 GMT

Zscaler will be expanding its global data center footprint and performing planned maintenance at our Singapore V (SIN5) data center. We expect minimal to no impact to services during the maintenance window.

The new VIPs for Zscaler Extranet Application Support are 167.103.60.134 & 2400:7aa0:2310::3a

Please update your firewall policy rules and any upstream access lists (ACLs) to allow all IP address ranges for this DC.

For more information, please visit:

Maintenance Window:

Start time is March 10, 10:30 am PST (March 10, 17:30 UTC)

End time is March 10, 5:00 pm PST (March 11, 00:00 UTC)

Update 3/10/26: Extending Maintenance
Update 3/9/26: Correcting UTC date + Added ipv6 Extranet VIP

Update - Wed, 11 Mar 2026 00:00:01 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Brussels II Datacenter Scheduled Maintenance - zscaler.net

Mon, 09 Mar 2026 16:17:46 GMT

Zscaler will be expanding its global data center footprint and performing planned maintenance at our Brussels II (BRU2) data center. We expect minimal to no impact to services during the maintenance window.

Please update your firewall policy rules and any upstream Access Control Lists to allow all IP addresses for this DC

For more information, please visit:

Maintenance Window:

Start time is March 11, 10:00 am PST (March 11, 17:00 UTC)

End time is March 11, 6:00 pm PST (March 12, 1:00 UTC)

Update 3/11/26: Extending Maintenance
Update 3/11/26: Extending Maintenance

Update - Wed, 11 Mar 2026 23:41:45 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Paris IV Datacenter Scheduled Maintenance - zscaler.net

Mon, 09 Mar 2026 15:53:04 GMT

Zscaler will be expanding its global data center footprint and performing planned maintenance at our Paris IV (PAR4) data center. We expect minimal to no impact to services during the maintenance window.

Please update your firewall policy rules and any upstream Access Control Lists to allow all IP addresses for this DC

For more information, please visit:

Maintenance Window:

Start time is March 10, 10:00 am PST (March 10, 17:00 UTC)

End time is March 10, 3:00 pm PST (March 10, 22:00 UTC)

Update - Tue, 10 Mar 2026 20:10:26 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Scheduled Maintenance Extended - zscalerthree.net

Sun, 08 Mar 2026 06:04:06 GMT

The Zscaler Site Reliability Engineering team will be extending the scheduled maintenance of the zscalerthree.net cloud by 1 hour. As part of our standard maintenance process, all logs will be collected and available after maintenance has been completed. Please contact Zscaler Support if you have additional questions.

Update - Sun, 08 Mar 2026 06:54:21 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Scheduled Maintenance Extended - zscloud.net

Sun, 08 Mar 2026 05:50:19 GMT

The Zscaler Site Reliability Engineering team will be extending the scheduled maintenance of the zscloud.net cloud by 1 hour. As part of our standard maintenance process, all logs will be collected and available after maintenance has been completed. Please contact Zscaler Support if you have additional questions.

Update - Sun, 08 Mar 2026 06:01:26 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Urgent Maintenance on Oceania and AMER datacenters for DLP services - zscaler.net

Sat, 07 Mar 2026 21:24:05 GMT

The Zscaler Site Reliability Engineering team will be performing an urgent maintenance on the Oceania and AMER datacenters on the zscaler.net cloud. This maintenance is scheduled for Sunday at 1:00 AM Pacific Time on Mar 8, 2026 (Sunday, Mar 8, 2026 9:00 AM UTC), and can take up to 3 hours to complete. We expect minimal to no impact to DLP - EDM and IDM functionality during the maintenance window. All logs will be collected and available after maintenance is complete. Please contact Zscaler Support if you have additional questions.

Update - Mon, 13 Apr 2026 14:22:42 UTC

This activity was completed within the mentioned timeframe. Please contact Zscaler Support if you have additional questions.

Urgent Maintenance on APAC and EMEA datacenters for DLP services - zscaler.net

Sat, 07 Mar 2026 21:12:20 GMT

The Zscaler Site Reliability Engineering team will be performing an urgent maintenance on the APAC and EMEA datacenters on the zscaler.net cloud. This maintenance is scheduled for Saturday at 2:00 PM Pacific Time on Mar 7, 2026 (Saturday, Mar 7, 2026 10:00 PM UTC), and can take up to 3 hours to complete. We expect minimal to no impact to DLP - EDM and IDM functionality during the maintenance window. All logs will be collected and available after maintenance is complete. Please contact Zscaler Support if you have additional questions.

Update - Sat, 07 Mar 2026 23:48:17 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Scheduled Maintenance Extended - zscalertwo.net

Sat, 07 Mar 2026 06:23:22 GMT

The Zscaler Site Reliability Engineering team will be extending the scheduled maintenance of the zscalertwo.net cloud by 2 hours. As part of our standard maintenance process, all logs will be collected and available after maintenance has been completed. Please contact Zscaler Support if you have additional questions.

Update - Sat, 07 Mar 2026 07:46:17 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Cloud Connector Repo Update - zscaler.net, zscalertwo.net, zscloud.net, zscalerthree.net

Sat, 07 Mar 2026 02:17:49 GMT

Zscaler operations will be performing a planned Software repository update (version 1.146.5_6.2.51633) for the Cloud Connectors on March 7th, 2026 between 9 AM PST to 11 AM PST (March 7th, 2026 between 17:00 to 19:00 UTC). To minimize disruption, we will be rolling out these changes gradually to all customers in 2-3 weeks. The service upgrade will deploy in accordance with the customer configured upgrade schedule. Workloads may experience a brief connection interruption. Customers should ensure that services are configured with recommended high availability to minimize traffic disruptions.

Update - Sun, 08 Mar 2026 22:58:49 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Kuala Lumpur II Data Center online - zscaler.net, zscalertwo.net, zscloud.net, zscalerthree.net

Fri, 06 Mar 2026 17:55:52 GMT

Dear Zscaler Customer,

You are receiving this notice in accordance with the Zscaler Service Continuity Policy.

As part of our effort to enhance our Security Cloud’s robustness and performance, Zscaler will be bringing online a new Kuala Lumpur II (KUL2) data center. This facility will be added to the public resolution service (Auto Geo Proximity) on March 9, 2026

What if I have more questions?

Contact Zscaler Support via the “Support” link at the top-right of the Zscaler Administration U.I page.

Or contact us by phone:

USA Toll-Free: +1-844-971-0010

Global Direct: +1-408-752-5885

Update - Mon, 09 Mar 2026 20:37:17 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Scheduled Maintenance Extended - EMEA Region - zscloud.net

Thu, 05 Mar 2026 22:50:47 GMT

Update - Wed, 11 Mar 2026 18:10:01 UTC

This activity was completed within the extended maintenance window. Please contact Zscaler Support if you have additional questions.

Vienna I Datacenter Scheduled Maintenance - zscaler.net, zscalertwo.net

Thu, 05 Mar 2026 21:28:25 GMT

Zscaler will be enabling IPv6 at our Vienna I (VIE1) Data Center. During the maintenance window the services through VIE1 Data Center will be restarted in phases to minimize the service impact.

Other Zscaler sites and Zscaler Services will continue to operate normally.

Maintenance Window:

Start time is March 9, 1:00 pm PST (March 9, 20:00 UTC)

End time is March 9, 7:00 pm PST (March 10, 2:00 UTC)

Update - Tue, 10 Mar 2026 00:56:53 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Upcoming New Data Centers and Expansions - zscaler.net, zscalertwo.net, zscloud.net, zscalerthree.net, private.zscaler.com, zpatwo.net

Wed, 04 Mar 2026 00:12:17 GMT

Dear Zscaler Customer,

In accordance with Zscaler Service Continuity Policy and per email notification sent on March 3, 2026, we would like to notify you of the upcoming new data centers and expansions at the locations listed below. These would be available anytime on or after May 2, 2026; 60 days or more from the date the first email notification is sent.

Please update your firewall policy rules and any upstream Access Control Lists (ACLs) to allow the new IP address ranges to avoid any service disruption.

Region	Location	CIDR	Notes
Americas	Bogota II	205.220.57.0/24	New RS* data center
Americas	Bogota II	205.220.68.0/24	New RS* data center
APAC	Chennai II	205.220.122.0/23	Expansion of existing data center
APAC	Chennai II	205.220.124.0/23	Expansion of existing data center
APAC	Chennai II	205.220.126.0/23	Expansion of existing data center
APAC	Hong Kong IV	175.107.170.0/23	New data center
APAC	Hong Kong IV	175.107.172.0/23	New data center
APAC	Hong Kong IV	175.107.174.0/23	New data center
APAC	Hong Kong IV	175.107.176.0/23	New data center
APAC	Hong Kong IV	175.107.178.0/23	New data center
APAC	Hong Kong IV	2400:7aa0:2e00::/40	New data center
APAC	Hyderabad I	101.2.252.0/23	Expansion of existing data center
APAC	Hyderabad I	101.2.254.0/23	Expansion of existing data center
APAC	Jakarta I	162.128.187.0/24	New RS* data center
APAC	Shanghai II	116.196.192.0/24	Expansion of existing data center
EMEA	Abu Dhabi II	159.254.242.0/23	New data center
EMEA	Abu Dhabi II	159.254.244.0/23	New data center
EMEA	Abu Dhabi II	159.254.246.0/23	New data center
EMEA	Abu Dhabi II	159.254.248.0/23	New data center
EMEA	Abu Dhabi II	159.254.250.0/23	New data center
EMEA	Abu Dhabi II	2a03:eec0:3900::/40	New data center
EMEA	Abu Dhabi II	147.161.174.0/23	Allocation removed from this data center
EMEA	London III	170.85.60.0/23	Expansion of existing data center
EMEA	London V	159.254.222.0/23	Expansion of existing data center
EMEA	London V	159.254.224.0/23	Expansion of existing data center
EMEA	Frankfurt IV	159.254.226.0/23	Expansion of existing data center
EMEA	Frankfurt IV	159.254.228.0/23	Expansion of existing data center
EMEA	Frankfurt IV	159.254.230.0/23	Expansion of existing data center
EMEA	Frankfurt VI	159.254.232.0/23	Expansion of existing data center
EMEA	Frankfurt VI	159.254.234.0/23	Expansion of existing data center
EMEA	Manchester I	159.254.236.0/23	Expansion of existing data center
EMEA	Manchester I	159.254.238.0/23	Expansion of existing data center
EMEA	Marseille I	159.254.252.0/23	Expansion of existing data center

*RS - Regional Surcharge (An additional subscription is required in order to use these data centers)

For more information, please visit:

If you have any questions, please contact Zscaler Support via the “Support” link on the Zscaler Administration U.I. or contact us by phone:

USA Toll Free: +1-844-971-0010

Global Direct: +1-408-752-5885

Mumbai VI Datacenter Scheduled Maintenance - zscaler.net

Mon, 02 Mar 2026 23:06:51 GMT

Please update your firewall policy rules and any upstream Access Control Lists to allow all IP addresses for this DC

For more information, please visit:

Maintenance Window:

Start time is March 6, 10:00 am PST (March 6, 18:00 UTC)

End time is March 6, 2:00 pm PST (March 6, 22:00 UTC)

Update - Fri, 06 Mar 2026 22:28:01 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Reminder Notification for Upcoming Data Center Expansions - zscaler.net, zscalertwo.net, zscloud.net, zscalerthree.net, private.zscaler.com, zpatwo.net

Mon, 02 Mar 2026 21:04:20 GMT

Dear Customer,

In accordance with the Zscaler Service Continuity Policy and as previously announced via email notification and Trust on January 16, 2026, we would like to remind you of the upcoming data center expansions at the locations listed below. These would be effective anytime on or after March 17, 2026.

Please update your firewall policy rules and any upstream access control lists to allow the new IP address ranges to avoid any service disruption.

Region	Location	CIDR	Notes
APAC	Hong Kong III	101.2.242.0/23	Expansion of existing DC
EMEA	Helsinki I	159.254.210.0/23	Expansion of existing DC
EMEA	Munich I	159.254.212.0/22	Expansion of existing DC
EMEA	Stockholm III	165.225.238.0/23	Expansion of existing DC

For more information, please visit:

If you have any questions, please contact Zscaler Support via the “Support” link on the Zscaler Administration U.I. or contact us by phone:

USA Toll Free: +1-844-971-0010

Global Direct: +1-408-752-5885

Scheduled Maintenance Extended - zscloud.net

Sun, 01 Mar 2026 05:27:53 GMT

The Zscaler Site Reliability Engineering team will be extending the scheduled maintenance of the zscloud.net cloud by 2 hours. As part of our standard maintenance process, all logs will be collected and available after maintenance has been completed. Please contact Zscaler Support if you have additional questions.

Update - Sun, 01 Mar 2026 07:07:16 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Urgent Maintenance - zscalerone.net

Sat, 28 Feb 2026 20:34:53 GMT

The Zscaler Site Reliability Engineering team will be performing an urgent maintenance on the zscalerone.net cloud. This maintenance is scheduled for Sunday at 1:00 AM Pacific Time on March 1, 2026 (Sunday, March 1, 2026 9:00 AM UTC), and can take up to 4 hours to complete. We expect minimal to no impact to services during the maintenance window. All logs will be collected and available after maintenance is complete. Please contact Zscaler Support if you have additional questions.

Urgent Maintenance on Capetown, Capetown IV, Johannesburg II, Johannesburg III, Lagos, London III, and New York III datacenters - zscalerone.net

Sat, 28 Feb 2026 20:27:07 GMT

The Zscaler Site Reliability Engineering team will be performing an urgent maintenance on the Capetown, Capetown IV, Johannesburg II, Johannesburg III, Lagos, London III, and New York III datacenters on the zscalerone.net cloud. This maintenance is scheduled for Saturday at 2:00 PM Pacific Time on February 28, 2026 (Saturday, February 28, 2026 10:00 PM UTC), and can take up to 3 hours to complete. We expect minimal to no impact to services during the maintenance window. All logs will be collected and available after maintenance is complete. Please contact Zscaler Support if you have additional questions.

Update - Sat, 28 Feb 2026 23:53:28 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Scheduled Maintenance Extended - zscaler.net

Sat, 28 Feb 2026 05:27:52 GMT

The Zscaler Site Reliability Engineering team will be extending the scheduled maintenance of the zscaler.net cloud by 4 hours. As part of our standard maintenance process, all logs will be collected and available after maintenance has been completed. Please contact Zscaler Support if you have additional questions.

Latest Update - Sat, 28 Feb 2026 11:27:44 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Update - Sat, 28 Feb 2026 09:15:38 UTC

The Zscaler Site Reliability Engineering team will be extending the scheduled maintenance of the zscaler.net cloud by 3 hours.

Update - Sat, 28 Feb 2026 11:27:44 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Osaka I Datacenter Scheduled Maintenance - zscaler.net, zscalerthree.net

Sat, 28 Feb 2026 01:56:13 GMT

Zscaler will be expanding its global data center footprint and performing maintenance at our Osaka I (OSA1) data center. We expect minimal to no impact to services during the maintenance window.

Please update your firewall policy rules and any upstream Access Control Lists to allow all IP addresses for this DC

For more information, please visit:

Maintenance Window:

Start time is March 4, 9:00 am PST (March 4, 17:00 UTC)

End time is March 4, 3:00 pm PST (March 4, 23:00 UTC)

Update 3/3/26: Corrected UTC date & time
Update 3/4/26: Extending Maintenance

Update - Thu, 05 Mar 2026 02:04:55 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Denver III Datacenter Scheduled Maintenance - zscalertwo.net

Sat, 28 Feb 2026 01:26:21 GMT

Zscaler will be expanding its global data center footprint and performing maintenance at our Denver III (DEN3) data center. We expect minimal to no impact to services during the maintenance window.

Please update your firewall policy rules and any upstream Access Control Lists to allow all IP addresses for this DC

For more information, please visit:

Maintenance Window:

Start time is March 3, 5:00 pm PST (March 4, 1:00 UTC)

End time is March 3, 11:00 pm PST (March 4, 7:00 UTC)

Update - Wed, 04 Mar 2026 06:44:10 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Vienna I Datacenter Scheduled Maintenance - zscaler.net, zscalerthree.net

Fri, 27 Feb 2026 22:11:22 GMT

Zscaler will be performing planned maintenance at our Vienna I (VIE1) Data Center.
We expect minimal to no impact to services during the maintenance window.

Maintenance Window:
Start time is March 3, 12:00 pm PST (March 3, 20:00 UTC)
End time is March 3, 5:00 pm PST (March 4, 1:00 UTC)

Update - Tue, 03 Mar 2026 21:29:10 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Brussels (BRU2) Datacenter Network Maintenance - zscaler.net, zscloud.net

Fri, 27 Feb 2026 02:08:36 GMT

Zscaler will be performing hardware maintenance in the Brussels II (BRU2) Datacenter.

Maintenance window,
Start: 2026-03-02 03:00 UTC
End: 2026-03-02 05:00 UTC
(2026-03-02 04:00 - 2026-03-02 06:00 Local time)

Update - Mon, 02 Mar 2026 05:29:35 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Manchester II Datacenter Scheduled Maintenance - zscaler.net, zscloud.net

Thu, 26 Feb 2026 21:41:49 GMT

Zscaler will be expanding its global data center footprint and performing maintenance at our Manchester II (MAN2) data center. We expect minimal to no impact to services during the maintenance window.

Please update your firewall policy rules and any upstream Access Control Lists to allow all IP addresses for this DC

For more information, please visit:

Maintenance Window:

Start time is March 2, 10:00 am PST (March 2, 18:00 UTC)

End time is March 2, 4:00 pm PST (March 3, 00:00 UTC)

Update - Mon, 02 Mar 2026 23:39:04 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Urgent Maintenance - zscalerone.net

Thu, 26 Feb 2026 20:26:05 GMT

The Zscaler Site Reliability Engineering team will be performing an urgent maintenance on zscalerone.net cloud. This maintenance is scheduled for Friday at 12:00 AM Pacific Time on February 27, 2026 (Friday, February 27, 2026 8:00 AM UTC), and can take up to 4 hours to complete.

Latest Update - Fri, 27 Feb 2026 13:43:04 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Update - Fri, 27 Feb 2026 11:55:48 UTC

The Zscaler Site Reliability Engineering team will be extending the scheduled maintenance of the zscalerone.net cloud by 2 hours.

Update - Fri, 27 Feb 2026 13:43:04 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Urgent Maintenance on Los Angeles II datacenter. - zscaler.net

Thu, 26 Feb 2026 06:13:19 GMT

The Zscaler Site Reliability Engineering team will be performing an urgent maintenance on the Los Angeles II on the zscaler.net cloud. This maintenance can take up to 3 hours to complete. We expect minimal to no impact to services during the maintenance window. All logs will be collected and available after maintenance is complete. Please contact Zscaler Support if you have additional questions.

Update - Thu, 26 Feb 2026 09:12:45 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Urgent Maintenance on Chicago II, San Francisco IV datacenters. - zscalertwo.net

Thu, 26 Feb 2026 06:08:52 GMT

The Zscaler Site Reliability Engineering team will be performing an urgent maintenance on the Chicago II, San Francisco IV on the zscalertwo.net cloud. This maintenance can take up to 3 hours to complete. We expect minimal to no impact to services during the maintenance window. All logs will be collected and available after maintenance is complete. Please contact Zscaler Support if you have additional questions.

Update - Thu, 26 Feb 2026 09:12:32 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Chennai II Datacenter Scheduled Maintenance - zscaler.net

Thu, 26 Feb 2026 00:45:32 GMT

Zscaler will be expanding its global data center footprint and performing maintenance at our Chennai II (MAA2) data center. We expect minimal to no impact to services during the maintenance window.

Please update your firewall policy rules and any upstream Access Control Lists to allow all IP addresses for this DC

For more information, please visit:

Maintenance Window:

Start time is March 2, 9:00 am PST (March 2,, 17:00 UTC)

End time is March 2,, 2:00 pm PST (March 2,, 22:00 UTC)

Update 2/26: Maintenance Date Update

Update - Mon, 02 Mar 2026 22:09:36 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

San Francisco IV (SJC4) Datacenter Network Maintenance - zscaler.net, zscalerone.net, zscalertwo.net, zscloud.net, zscalerthree.net

Wed, 25 Feb 2026 02:50:19 GMT

Zscaler will be performing hardware maintenance in San Francisco IV (SJC4) Datacenter.

Maintenance window:
Start: 2026-02-27 02:00 UTC
End: 2026-02-27 04:00 UTC
(Local Time 2026-02-26 18:00 - 2026-02-26 20:00)

Update - Mon, 02 Mar 2026 14:30:22 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Tel Aviv II (TLV2) Datacenter Network Maintenance - zscloud.net

Tue, 24 Feb 2026 21:58:44 GMT

Zscaler will be performing urgent hardware maintenance in the Tel Aviv II (TLV2) Datacenter.

Maintenance window,
Start: 2026-27-2 21:00 IST
End: 2026-27-2 23:00 IST
(i.e. 2026-27-2 19:00 - 21:00 UTC)

During the maintenance, traffic will failover to redundant devices in the same datacenter. However, intermittent connections and connection reestablishment may be observed.

Update - Fri, 27 Feb 2026 20:25:16 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Vienna I Datacenter Scheduled Maintenance - zscloud.net

Tue, 24 Feb 2026 00:30:57 GMT

Zscaler will be performing planned maintenance at our Vienna I (VIE1) Data Center.

We expect minimal to no impact to services during the maintenance window.

Maintenance Window:

Start time is February 26, 12:00 pm PST (February 26, 20:00 UTC)

End time is February 26, 7:00 pm PST (February 27, 3:00 UTC)

Update 2/26: Extended Maintenance

Update - Fri, 27 Feb 2026 02:46:58 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Melbourne II Datacenter Scheduled Maintenance - zscalerthree.net

Mon, 23 Feb 2026 21:19:41 GMT

Zscaler will be expanding its global data center footprint and performing maintenance at our Melbourne II (MEL2) data center. We expect minimal to no impact to services during the maintenance window.

Please update your firewall policy rules and any upstream Access Control Lists to allow all IP addresses for this DC

For more information, please visit:

Maintenance Window:

Start time is February 25, 6:00 am PST (February 25, 14:00 UTC)

End time is February 25, 11:00 am PST (February 25, 19:00 UTC)

Update - Wed, 25 Feb 2026 18:06:56 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

China Premium Access Plus Datacenter (Beijing V) Network Maintenance - zscaler.net, zscalertwo.net, zscloud.net, zscalerthree.net

Mon, 23 Feb 2026 17:59:09 GMT

Beijing V DC network providers have advised maintenance work as below. During the maintenance window, China Premium Access Plus Services within this data center may experience intermittent disconnections.

Start Time: 2026-03-20 16:00:00 UTC
End Time: 2026-03-20 20:00:00 UTC
(Datacenter Local Time 2026-03-21 00:00 - 2026-03-21 04:00 China Standard Time (UTC+8:00))

Reason of Maintenance: Provider advised maintenance.
Impact During Maintenance: Intermittent connectivity might be observed during the maintenance period

Update - Fri, 20 Mar 2026 21:35:34 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Tokyo V (TYO5) Datacenter Network Maintenance - zscalerthree.net

Mon, 23 Feb 2026 10:05:34 GMT

Zscaler will be performing hardware maintenance in Tokyo V (TYO5) Datacenter.

Scheduled Maintenance window,
Start: 2026-02-24 15:00 UTC
End: 2026-02-24 19:00 UTC
(Local Time 2026-02-25 00:00 - 2026-02-25 04:00 JST)

Update - Tue, 24 Feb 2026 16:49:23 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Hyderabad I Datacenter Scheduled Maintenance - zscalertwo.net

Sat, 21 Feb 2026 05:35:19 GMT

Zscaler will be expanding its global data center footprint and performing maintenance at our Hyderabad I (HYD1) data center. We expect minimal to no impact to services during the maintenance window.

Please update your firewall policy rules and any upstream Access Control Lists to allow all IP addresses for this DC

For more information, please visit:

Maintenance Window:

Start time is February 24, 9:00 am PST (February 24, 17:00 UTC)

End time is February 24, 4:00 pm PST (February 25, 00:00 UTC)

Update - Wed, 25 Feb 2026 00:08:32 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Frankfurt VI Datacenter Maintenance - zscaler.net

Fri, 20 Feb 2026 21:39:08 GMT

Zscaler will be expanding its global data center footprint and performing maintenance at our Frankfurt VI (FRA6) data center. We expect minimal to no impact to services during the maintenance window.

Please update your firewall policy rules and any upstream Access Control Lists to allow all IP addresses for this DC

For more information, please visit: