The following IPv4 and IPv6 subnet ranges will be removed from Zoom for Government resources for Meetings and Webinars, CRC, enhanced API Connector, Zoom Phone, and Zoom Contact Center (ZCC) resources, starting no earlier than 30 days from the posting of this notice. We recommend that network administrators, with Zoom for Government-specific firewall or network rules, update their systems as soon as possible in preparation.
Removed IPv4 range for Meetings and Webinars, CRC, enhanced API Connector, Zoom Phone, and ZCC: 161.199.136.0/22 161.199.136.0/24 161.199.138.0/24 198.251.240.0/20
Removed IPv6 range for Zoom Phone: 2620:123:2005:8a::00/64 2620:123:2009:88::00/64
A complete list of network firewall IP ranges for Zoom for Government can be found on the Zoom for Government Support site at: Knowledge Base - Network firewall or proxy server settings for Zoom for Government - Zoom for Government
Posted Mar 01, 2026 - 10:06 PST
This scheduled maintenance affects: Zoom Meetings (Zoom Meetings, Zoom Conference Room Connector, Zoom Webinars), Zoom Phone (Zoom Phone), and Zoom Contact Center (Zoom Contact Center).