Cisco Webex

Cisco publishes network requirements for Webex Meetings, Messaging, and Calling, including IP address ranges and ports. Use the official help article for firewall planning — ranges are large and updated periodically.

Webex network requirements & IP ranges

Documentation

Official Webex IP ranges and ports for meetings, messaging, and calling (docs; not a machine-readable feed).

https://help.webex.com/article/WBX000028782

Published ranges

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