Network Access Requirements

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To establish cloud connections, computers and devices running VNC Connect must be able to communicate with RealVNC’s cloud service at the locations in the table below. If a proxy or firewall is blocking outgoing communications, cloud connections cannot be established.

*You don’t need to comply with these requirements if you have an Enterprise subscription and only establish direct connections.

If you are sure endpoints have network access but you still cannot establish cloud connections, check our service status page.

URL IPv4 address TCP port UDP port
 https://auth-a.services.vnc.com  212.119.29.178  443  n/a
 https://auth-b.services.vnc.com  165.254.191.246
 https://auth-c.services.vnc.com  165.254.191.230
 https://dir-a.services.vnc.com  212.119.29.179  443  n/a
 https://dir-b.services.vnc.com
 165.254.191.247
 https://dir-c.services.vnc.com  165.254.191.231
 https://hb-a.services.vnc.com  212.119.29.177  443  n/a
 https://hb-b.services.vnc.com  165.254.191.245
 https://hb-c.services.vnc.com  165.254.191.229
 https://hc-1-gb-slg-1.services.vnc.com  212.119.29.128/28  443

3478

11000-20000*


 *required for High Speed Streaming

 https://hc-2-gb-slg-1.services.vnc.com
 https://hc-3-gb-slg-1.services.vnc.com
 https://hc-4-gb-slg-1.services.vnc.com
 https://hc-1-us-ca-1.services.vnc.com  165.254.239.128/28
 https://hc-2-us-ca-1.services.vnc.com
 https://hc-3-us-ca-1.services.vnc.com
 https://hc-4-us-ca-1.services.vnc.com
 https://hc-1-us-va-1.services.vnc.com  165.254.191.192/28
 https://hc-2-us-va-1.services.vnc.com
 https://hc-3-us-va-1.services.vnc.com
 https://hc-4-us-va-1.services.vnc.com
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