Announcing Updated IP Address Ranges

Scheduled for Oct 22, 23:59 PDT - Oct 23, 00:00 PDT

Scheduled

In the previous announcement for new IP ranges for Zoom for Government (https://www.zoomgovstatus.com/incidents/ch4xp6jxm3yj), the IPv4 ranges for the Meeting and Webinar, Zoom Contact Center (ZCC), Cloud Room Connector (CRC), Enhanced Room Connector, and content delivery network (CDN) resources were incorrectly listed as 172.231.81.0/24 and 172.231.80.0/24. Below are the correct IPv4 ranges that are being added to Zoom for Government resources starting no earlier than 30 days from the posting of this notice:

New IPv4 range for Meetings and Webinars, ZCC, CRC, and Enhanced Room Connector:
173.231.81.0/24

New IPv4 range for CDN:
173.231.80.0/24

In addition, the following addresses need to be removed from any Zoom for Government-specific firewall or network rules:

Removed IPv4 range for Meetings and Webinars, ZCC, CRC, and Enhanced Room Connector:
172.231.81.0/24

Removed IPv4 range for CDN:
172.231.80.0/24

The Zoom for Government firewall documentation has been updated with the correct IPv4 addresses, and the previously announced addresses have been removed.

A complete list of network firewall IP ranges for Zoom for Government can be found on the Zoom for Government Support site at: https://support.zoomgov.com/hc?id=kb_article_view&sysparm_article=KB0010104

Posted Sep 22, 2025 - 16:05 PDT

This scheduled maintenance affects: Zoom Meetings (Zoom Meetings, Zoom Conference Room Connector, Zoom Webinars) and Zoom Contact Center (Zoom Contact Center).