Network Firewall or Proxy Server Settings for Zoom – Zoom Help Center

Network Firewall or Web Security Gateway

If your app stays in a "connecting" mode or timed out due to "Network error, please try again" or "Can't connect to our service, please check your network connection and try again" - it could be related to your network connection, network firewall settings or web security gateway settings.

Note: Check your network connection by opening a browser and ensure that you can access https://zoom.us

To configure your network firewall, please see the following table:

Protocol

Ports

Source

Destination

TCP

80,443

All Zoom Clients

*.zoom.us

TCP

443, 8801, 8802

All Zoom Clients

IPv4:

3.7.35.0/25
3.21.137.128/25
3.22.11.0/24
3.25.41.128/25
3.25.42.0/25
3.80.20.128/25
3.101.32.128/25
3.101.52.0/25
3.104.34.128/25
3.120.121.0/25
3.127.194.128/25
3.208.72.0/25
3.211.241.0/25
3.235.69.0/25
3.235.82.0/23
3.235.71.128/25
3.235.72.128/25
3.235.73.0/25
3.235.96.0/23
4.34.125.128/25
4.35.64.128/25
8.5.128.0/23
13.52.6.128/25
13.52.146.0/25
13.114.106.166/32
18.205.93.128/25
50.239.202.0/23
50.239.204.0/24
52.61.100.128/25
52.81.151.128/25
52.197.97.21/32
52.202.62.192/26
52.215.168.0/25
64.69.74.0/24
64.125.62.0/24
64.211.144.0/24
65.39.152.0/24
69.174.57.0/24
69.174.108.0/22
99.79.20.0/25
103.122.166.0/23
109.94.160.0/22
109.244.18.0/25
109.244.19.0/24
115.110.154.192/26
115.114.56.192/26
115.114.115.0/26
115.114.131.0/26
120.29.148.0/24
147.124.96.0/19
160.1.56.128/25
161.199.136.0/22
162.12.232.0/22
162.255.36.0/22
165.254.88.0/23
173.231.80.0/20
192.204.12.0/22
202.177.207.128/27
202.177.213.96/27
204.80.104.0/21
204.141.28.0/22
207.226.132.0/24
209.9.211.0/24
209.9.215.0/24
210.57.55.0/24
213.19.144.0/24
213.19.153.0/24
213.244.140.0/24
221.122.88.64/27
221.122.88.128/25
221.122.89.128/25
221.123.139.192/27

IPv6:
2620:123:2000::/40

UDP

3478, 3479, 8801 - 8810

All Zoom Clients

IPv4:

Connection Type: Zoom Phone

Protocol	Ports	Source	Destination
TCP	5090, 5091	All Zoom Clients	8.5.128.0/24 64.211.144.0/24 103.122.166.0/23 109.94.160.0/22 120.29.148.0/24 147.124.96.0/19 192.204.12.0/22 209.9.215.0/24 213.19.153.0/24
UDP	5090	All Zoom Clients	8.5.128.0/24 64.211.144.0/24 103.122.166.0/23 109.94.160.0/22 120.29.148.0/24 147.124.96.0/19 192.204.12.0/22 209.9.215.0/24 213.19.153.0/24
UDP	20000-64000	All Zoom Clients	64.211.144.0/24 103.122.166.0/23 147.124.96.0/19 162.12.232.0/22 207.226.132.0/24 209.9.211.0/24 213.19.144.0/24 213.244.140.0/24

Connection Type: Zoom Website

Protocol	Ports	Source	Destination
TCP	80, 443	All Zoom Clients	.zoom.us .cloudfront.net

Proxy Server

We support https/SSL proxy server via port 443.

Zoom automatically detects your proxy settings. In some instances, you may be prompted to enter the proxy username/password.

Note: We recommend whitelisting zoom.us and *.zoom.us from proxy or SSL inspection.

Note: IP ranges to be whitelisted can also be found at the following:

For Meeting Connector and Others

Please submit a ticket if you have further questions.

Related articles