Network requirements for IT

Converge uses the Zoom Video SDK for audio, video, and screen sharing. Participants on home networks connect without any preparation. Corporate networks with strict firewalls, proxies, or VPNs sometimes need the rules below added in advance. Share this page with the IT team.

Summary

Requirement	Value
Outbound TCP ports	80, 443, 8801, 8802
Outbound UDP ports	3478, 3479, 8801 to 8810
Domains	`*.zoom.us` and your Converge address
IP ranges	Listed below

Ports

TCP

80 and 443: initial connection and signaling.
8801 and 8802: media transport fallback.

UDP

3478 and 3479: STUN and TURN services.
8801 to 8810: media transport.

UDP should not be blocked. It gives the best audio quality. When UDP is restricted, the connection falls back to TCP, which works but is more prone to choppy audio.

Domains

*.zoom.us
Your Converge address, normally platform.startconverge.com, or your organization’s own Converge subdomain.

IP ranges

IPv4

3.7.35.0/25
3.21.137.128/25
3.25.41.128/25
3.80.20.128/25
3.104.34.128/25
3.120.121.0/25
3.127.194.128/25
3.208.72.0/25
3.235.71.128/25

IPv6

2407:30C0::/32
2600:9000:2600::/48
2620:123:2000::/40

Zoom maintains the definitive, current list. Check it before making changes: Zoom network firewall or proxy server settings.

Proxies and WebRTC

HTTPS and SSL proxies are supported on port 443, and automatic proxy detection works.
Exclude zoom.us and *.zoom.us from proxy inspection.
WebRTC connections must be allowed by the browser and any endpoint security software.

Verifying

From a computer on the corporate network, run the Converge setup check. Its Connection item reports whether the service is reachable over WebSocket and UDP, with latency and packet loss. A result of You’re all set means the rules are in place.
If the check fails, confirm that the ports above are reachable, with telnet or a similar tool.
Join a test Converge session and connect to the voice call.

Questions from IT can go to support@startconverge.com.