Zoom network firewall or proxy server settings

Last Updated:

On Zoom Status, Zoom announces scheduled maintenance when IP address updates are planned. Customers can view the relevant posts on Zoom Status to check which IP address ranges were modified and subscribe via email or SMS to get a notification for IP range updates and other important Zoom updates. This article only includes current IP address ranges.

If your app stays in a "connecting" mode or has timed out due to Network error, please try again or Can't connect to our service, please check your network connection and try again issues, 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

This article covers:

Zoom firewall rules
Proxy server
Firewall rules for other Zoom services

Zoom firewall rules

To configure your network firewall, please see the following table. The following rules should be applied to outbound traffic. Zoom will communicate to the destination port received when the client makes its connection. The firewall should be configured to allow these return connections.

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 3.25.41.128/25 3.80.20.128/25 3.96.19.0/24 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 3.235.71.128/25 3.235.72.128/25 3.235.73.0/25 3.235.82.0/23 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 15.220.80.0/24 15.220.81.0/25 16.63.29.0/24 16.63.30.0/24 18.157.88.0/24 18.205.93.128/25 18.254.23.128/25 18.254.61.0/25 20.203.158.80/28 20.203.190.192/26 50.239.202.0/23 50.239.204.0/24 52.61.100.128/25 52.202.62.192/26 52.215.168.0/25 64.125.62.0/24 64.211.144.0/24 64.224.32.0/19 65.39.152.0/24 69.174.57.0/24 69.174.108.0/22 99.79.20.0/25 101.36.167.0/24 101.36.170.0/23 103.122.166.0/23 111.33.115.0/25 111.33.181.0/25 115.110.154.192/26 115.114.56.192/26 115.114.115.0/26 115.114.131.0/26 120.29.148.0/24 129.151.1.128/27 129.151.1.192/27 129.151.2.0/27 129.151.3.160/27 129.151.7.96/27 129.151.11.64/27 129.151.11.128/27 129.151.12.0/27 129.151.13.64/27 129.151.15.224/27 129.151.16.0/27 129.151.31.224/27 129.151.40.0/25 129.151.40.160/27 129.151.40.192/27 129.151.41.0/25 129.151.41.192/26 129.151.42.0/27 129.151.42.64/27 129.151.42.128/26 129.151.42.224/27 129.151.43.0/27 129.151.43.64/26 129.151.48.0/27 129.151.48.160/27 129.151.49.0/26 129.151.49.96/27 129.151.49.128/27 129.151.49.192/26 129.151.50.0/27 129.151.50.64/27 129.151.52.128/26 129.151.53.32/27 129.151.53.224/27 129.151.55.32/27 129.151.56.32/27 129.151.57.32/27 129.151.60.192/27 129.159.2.32/27 129.159.2.192/27 129.159.3.0/24 129.159.4.0/23 129.159.6.0/27 129.159.6.96/27 129.159.6.128/26 129.159.6.192/27 129.159.160.0/26 129.159.160.64/27 129.159.163.0/26 129.159.163.160/27 129.159.208.0/21 129.159.216.0/26 129.159.216.64/27 129.159.216.128/26 130.61.164.0/22 132.226.176.0/25 132.226.176.128/26 132.226.177.96/27 132.226.177.128/25 132.226.178.0/27 132.226.178.128/27 132.226.178.224/27 132.226.179.0/27 132.226.179.64/27 132.226.180.128/27 132.226.183.160/27 132.226.185.192/27 134.224.0.0/16 140.238.128.0/24 140.238.232.0/22 144.195.0.0/16 147.124.96.0/19 149.137.0.0/17 150.230.224.0/25 150.230.224.128/26 150.230.224.224/27 152.67.20.0/24 152.67.118.0/24 152.67.168.0/22 152.67.180.0/24 152.67.184.32/27 152.67.240.0/21 152.70.0.0/25 152.70.0.128/26 152.70.0.224/27 152.70.1.0/25 152.70.1.128/26 152.70.1.192/27 152.70.2.0/26 152.70.7.192/27 152.70.10.32/27 152.70.224.32/27 152.70.224.64/26 152.70.224.160/27 152.70.224.192/27 152.70.225.0/25 152.70.225.160/27 152.70.225.192/27 152.70.226.0/27 152.70.227.96/27 152.70.227.192/27 152.70.228.0/27 152.70.228.64/27 152.70.228.128/27 156.45.0.0/17 158.101.64.0/24 158.101.184.0/23 158.101.186.0/25 158.101.186.128/27 158.101.186.192/26 158.101.187.0/25 158.101.187.160/27 158.101.187.192/26 159.124.0.0/16 160.1.56.128/25 161.199.136.0/22 162.12.232.0/22 162.255.36.0/22 165.254.88.0/23 166.108.64.0/18 168.138.16.0/22 168.138.48.0/24 168.138.56.0/21 168.138.72.0/24 168.138.74.0/25 168.138.80.0/25 168.138.80.128/26 168.138.80.224/27 168.138.81.0/24 168.138.82.0/23 168.138.84.0/25 168.138.84.128/27 168.138.84.192/26 168.138.85.0/24 168.138.86.0/23 168.138.96.0/22 168.138.116.0/27 168.138.116.64/27 168.138.116.128/27 168.138.116.224/27 168.138.117.0/27 168.138.117.96/27 168.138.117.128/27 168.138.118.0/27 168.138.118.160/27 168.138.118.224/27 168.138.119.0/27 168.138.119.128/27 168.138.244.0/24 170.114.0.0/16 173.231.80.0/20 192.204.12.0/22 193.122.16.0/25 193.122.16.192/27 193.122.17.0/26 193.122.17.64/27 193.122.17.224/27 193.122.18.32/27 193.122.18.64/26 193.122.18.160/27 193.122.18.192/27 193.122.19.0/27 193.122.19.160/27 193.122.19.192/27 193.122.20.224/27 193.122.21.96/27 193.122.32.0/21 193.122.40.0/22 193.122.44.0/24 193.122.45.32/27 193.122.45.64/26 193.122.45.128/25 193.122.46.0/23 193.122.208.96/27 193.122.216.32/27 193.122.222.0/27 193.122.223.128/27 193.122.226.160/27 193.122.231.192/27 193.122.232.160/27 193.122.237.64/27 193.122.244.160/27 193.122.244.224/27 193.122.245.0/27 193.122.247.96/27 193.122.252.192/27 193.123.0.0/19 193.123.40.0/21 193.123.128.0/19 193.123.168.0/21 193.123.192.224/27 193.123.193.0/27 193.123.193.96/27 193.123.194.96/27 193.123.194.128/27 193.123.194.224/27 193.123.195.0/27 193.123.196.0/27 193.123.196.192/27 193.123.197.0/27 193.123.197.64/27 193.123.198.64/27 193.123.198.160/27 193.123.199.64/27 193.123.200.128/27 193.123.201.32/27 193.123.201.224/27 193.123.202.64/27 193.123.202.128/26 193.123.203.0/27 193.123.203.160/27 193.123.203.192/27 193.123.204.0/27 193.123.204.64/27 193.123.205.64/26 193.123.205.128/27 193.123.206.32/27 193.123.206.128/27 193.123.207.32/27 193.123.208.160/27 193.123.209.0/27 193.123.209.96/27 193.123.210.64/27 193.123.211.224/27 193.123.212.128/27 193.123.215.192/26 193.123.216.64/27 193.123.216.128/27 193.123.217.160/27 193.123.219.64/27 193.123.220.224/27 193.123.222.64/27 193.123.222.224/27 198.251.128.0/17 202.177.207.128/27 204.80.104.0/21 204.141.28.0/22 206.247.0.0/16 207.226.132.0/24 209.9.211.0/24 209.9.215.0/24 213.19.144.0/24 213.19.153.0/24 213.244.140.0/24 221.122.63.0/24 221.122.64.0/24 221.122.88.64/27 221.122.88.128/25 221.122.89.128/25 221.123.139.192/27 IPv6: 2407:30C0::/32 2600:9000:2600::/48 2620:123:2000::/40
UDP	3478, 3479, 8801 - 8810	All Zoom clients	IPv4: 3.7.35.0/25 3.21.137.128/25 3.25.41.128/25 3.80.20.128/25 3.96.19.0/24 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 3.235.71.128/25 3.235.72.128/25 3.235.73.0/25 3.235.82.0/23 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 15.220.80.0/24 15.220.81.0/25 16.63.29.0/24 16.63.30.0/24 18.157.88.0/24 18.205.93.128/25 18.254.23.128/25 18.254.61.0/25 20.203.158.80/28 20.203.190.192/26 50.239.202.0/23 50.239.204.0/24 52.61.100.128/25 52.202.62.192/26 52.215.168.0/25 64.125.62.0/24 64.211.144.0/24 64.224.32.0/19 65.39.152.0/24 69.174.57.0/24 69.174.108.0/22 99.79.20.0/25 101.36.167.0/24 101.36.170.0/23 103.122.166.0/23 111.33.115.0/25 111.33.181.0/25 115.110.154.192/26 115.114.56.192/26 115.114.115.0/26 115.114.131.0/26 120.29.148.0/24 129.151.1.128/27 129.151.1.192/27 129.151.2.0/27 129.151.3.160/27 129.151.7.96/27 129.151.11.64/27 129.151.11.128/27 129.151.12.0/27 129.151.13.64/27 129.151.15.224/27 129.151.16.0/27 129.151.31.224/27 129.151.40.0/25 129.151.40.160/27 129.151.40.192/27 129.151.41.0/25 129.151.41.192/26 129.151.42.0/27 129.151.42.64/27 129.151.42.128/26 129.151.42.224/27 129.151.43.0/27 129.151.43.64/26 129.151.48.0/27 129.151.48.160/27 129.151.49.0/26 129.151.49.96/27 129.151.49.128/27 129.151.49.192/26 129.151.50.0/27 129.151.50.64/27 129.151.52.128/26 129.151.53.32/27 129.151.53.224/27 129.151.55.32/27 129.151.56.32/27 129.151.57.32/27 129.151.60.192/27 129.159.2.32/27 129.159.2.192/27 129.159.3.0/24 129.159.4.0/23 129.159.6.0/27 129.159.6.96/27 129.159.6.128/26 129.159.6.192/27 129.159.160.0/26 129.159.160.64/27 129.159.163.0/26 129.159.163.160/27 129.159.208.0/21 129.159.216.0/26 129.159.216.64/27 129.159.216.128/26 130.61.164.0/22 132.226.176.0/25 132.226.176.128/26 132.226.177.96/27 132.226.177.128/25 132.226.178.0/27 132.226.178.128/27 132.226.178.224/27 132.226.179.0/27 132.226.179.64/27 132.226.180.128/27 132.226.183.160/27 132.226.185.192/27 134.224.0.0/16 140.238.128.0/24 140.238.232.0/22 144.195.0.0/16 147.124.96.0/19 149.137.0.0/17 150.230.224.0/25 150.230.224.128/26 150.230.224.224/27 152.67.20.0/24 152.67.118.0/24 152.67.168.0/22 152.67.180.0/24 152.67.184.32/27 152.67.240.0/21 152.70.0.0/25 152.70.0.128/26 152.70.0.224/27 152.70.1.0/25 152.70.1.128/26 152.70.1.192/27 152.70.2.0/26 152.70.7.192/27 152.70.10.32/27 152.70.224.32/27 152.70.224.64/26 152.70.224.160/27 152.70.224.192/27 152.70.225.0/25 152.70.225.160/27 152.70.225.192/27 152.70.226.0/27 152.70.227.96/27 152.70.227.192/27 152.70.228.0/27 152.70.228.64/27 152.70.228.128/27 156.45.0.0/17 158.101.64.0/24 158.101.184.0/23 158.101.186.0/25 158.101.186.128/27 158.101.186.192/26 158.101.187.0/25 158.101.187.160/27 158.101.187.192/26 159.124.0.0/16 160.1.56.128/25 161.199.136.0/22 162.12.232.0/22 162.255.36.0/22 165.254.88.0/23 166.108.64.0/18 168.138.16.0/22 168.138.48.0/24 168.138.56.0/21 168.138.72.0/24 168.138.74.0/25 168.138.80.0/25 168.138.80.128/26 168.138.80.224/27 168.138.81.0/24 168.138.82.0/23 168.138.84.0/25 168.138.84.128/27 168.138.84.192/26 168.138.85.0/24 168.138.86.0/23 168.138.96.0/22 168.138.116.0/27 168.138.116.64/27 168.138.116.128/27 168.138.116.224/27 168.138.117.0/27 168.138.117.96/27 168.138.117.128/27 168.138.118.0/27 168.138.118.160/27 168.138.118.224/27 168.138.119.0/27 168.138.119.128/27 168.138.244.0/24 170.114.0.0/16 173.231.80.0/20 192.204.12.0/22 193.122.16.0/25 193.122.16.192/27 193.122.17.0/26 193.122.17.64/27 193.122.17.224/27 193.122.18.32/27 193.122.18.64/26 193.122.18.160/27 193.122.18.192/27 193.122.19.0/27 193.122.19.160/27 193.122.19.192/27 193.122.20.224/27 193.122.21.96/27 193.122.32.0/21 193.122.40.0/22 193.122.44.0/24 193.122.45.32/27 193.122.45.64/26 193.122.45.128/25 193.122.46.0/23 193.122.208.96/27 193.122.216.32/27 193.122.222.0/27 193.122.223.128/27 193.122.226.160/27 193.122.231.192/27 193.122.232.160/27 193.122.237.64/27 193.122.244.160/27 193.122.244.224/27 193.122.245.0/27 193.122.247.96/27 193.122.252.192/27 193.123.0.0/19 193.123.40.0/21 193.123.128.0/19 193.123.168.0/21 193.123.192.224/27 193.123.193.0/27 193.123.193.96/27 193.123.194.96/27 193.123.194.128/27 193.123.194.224/27 193.123.195.0/27 193.123.196.0/27 193.123.196.192/27 193.123.197.0/27 193.123.197.64/27 193.123.198.64/27 193.123.198.160/27 193.123.199.64/27 193.123.200.128/27 193.123.201.32/27 193.123.201.224/27 193.123.202.64/27 193.123.202.128/26 193.123.203.0/27 193.123.203.160/27 193.123.203.192/27 193.123.204.0/27 193.123.204.64/27 193.123.205.64/26 193.123.205.128/27 193.123.206.32/27 193.123.206.128/27 193.123.207.32/27 193.123.208.160/27 193.123.209.0/27 193.123.209.96/27 193.123.210.64/27 193.123.211.224/27 193.123.212.128/27 193.123.215.192/26 193.123.216.64/27 193.123.216.128/27 193.123.217.160/27 193.123.219.64/27 193.123.220.224/27 193.123.222.64/27 193.123.222.224/27 198.251.128.0/17 202.177.207.128/27 204.80.104.0/21 204.141.28.0/22 206.247.0.0/16 207.226.132.0/24 209.9.211.0/24 209.9.215.0/24 213.19.144.0/24 213.19.153.0/24 213.244.140.0/24 221.122.63.0/24 221.122.64.0/24 221.122.88.64/27 221.122.88.128/25 221.122.89.128/25 221.123.139.192/27 IPv6: 2407:30C0::/32 2600:9000:2600::/48 2620:123:2000::/40

Firewall rules for Zoom Phone

Note:

Outbound port 390 must be open for company directory search on desk phones.
To see firewall rules for zero touch provisioning, refer to the Poly, Yealink, Cisco, or Grandstream support site.

Protocol	Ports	Source	Destination
TCP	5091	All Zoom clients	8.5.128.0/24 64.211.144.0/24 64.224.32.0/19 65.39.152.0/24 69.174.57.0/24 101.36.167.0/24 103.122.166.0/23 120.29.148.0/24 144.195.0.0/16 147.124.96.0/19 149.137.0.0/17 159.124.0.0/16 162.12.232.0/22 173.231.92.0/24 173.231.94.0/24 192.204.12.0/22 206.247.0.0/16 209.9.215.0/24 213.19.144.0/24 213.19.153.0/24 213.244.140.0/24 IPv6: 2620:123:2000::/40
TCP	390 (see note)	All Zoom clients	3.21.137.128/25 3.235.96.0/23
UDP	20000-64000	All Zoom Clients	64.211.144.0/24 64.224.32.0/19 65.39.152.0/24 69.174.57.0/24 101.36.167.0/24 103.122.166.0/23 115.117.119.96/27 121.244.146.0/27 121.244.203.192/27 144.195.0.0/16 147.124.96.0/19 149.137.0.0/17 159.124.0.0/16 162.12.232.0/22 173.231.92.0/24 173.231.94.0/24 203.200.219.128/27 206.247.0.0/16 207.226.132.0/24 209.9.211.0/24 213.19.144.0/24 213.244.140.0/24 IPv6: 2620:123:2000::/40

Firewall rules for Zoom Contact Center

Protocol	Ports	Source	Destination
UDP	20000-64000	All Zoom Clients	50.239.204.0/24 149.137.0.0/17 204.80.104.0/21 IPv6: 2620:123:2000::/40
TCP	443	All Zoom Clients	50.239.204.0/24 103.122.166.0/23 149.137.0.0/17 204.141.28.0/22 207.226.132.0/24
TCP	5091	All Zoom Clients	50.239.204.0/24 149.137.0.0/17 204.80.104.0/21 IPv6: 2620:123:2000::/40

Firewall rules for Zoom website

Protocol	Ports	Source	Destination
TCP	80, 443	All Zoom Clients User's web browser	*.zoom.us

Firewall rules for Zoom Apps created by Zoom

Protocol	Ports	Source	Destination
TCP	443	All Zoom Clients User's web browser	*.zoomapp.cloud

Firewall rules for certificate validation

The Zoom client 5.5.0 or later requires allowing the following URLs for certificate validation.

Protocol	Ports	Source	Destination
HTTP	80	Zoom client	crl3.digicert.com crl4.digicert.com ocsp.digicert.com crl.entrust.net certificates.godaddy.com crl.godaddy.com ocsp.godaddy.com certificates.starfieldtech.com crl.starfieldtech.com ocsp.starfieldtech.com

Zoom CDN

The Zoom CDN is used to optimize the delivery of recordings and other assets from the Zoom website. These IP ranges are dedicated for Zoom. This is not used for the in-meeting experience.

Protocol

Ports

Source

Destination

HTTPS

443

User's web browser

IPv4:
52.84.151.0/24
170.114.45.0/24
170.114.46.0/24
170.114.52.0/24

IPv6:
2407:30c0:180::/48
2407:30c0:181::/48
2407:30c0:182::/48
2600:9000:2600::/48

Zoom Device Management (ZDM)

Zoom Device Management(ZDM) is a device management tool, that allows you to manage your Zoom Rooms, devices and Zoom Clients without having to physically engage with each device. If your company network includes firewall or proxy servers, you will need to add this ZDM url to your allowed list of network domains to allow communication with the ZDM server:

https://zdmapi.zoom.us

IP ranges txt files

IP ranges to be allowed can also be downloaded in txt file format:

Proxy server

We support https/SSL proxy server via port 443 for Zoom traffic.

Note: This does not apply to the Zoom Phone service.

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

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

Firewall rules for other Zoom services

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