To establish cloud connections, computers and devices running RealVNC Connect must be able to communicate with RealVNC Connect’s cloud service at the locations in the tables 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 use offline licensing 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.
Note on SSL/TLS Proxies
Strict certificate signature checking is used in RealVNC Connect applications (RealVNC Server, RealVNC Viewer and RealVNC Connect Setup) - SSL/TLS proxies that intercept SSL/TLS connections and mint new certificates will cause connections to fail.
If SSL/TLS proxies or endpoint security software with SSL/TLS inspection are used in your organization, please ensure the IP addresses and domains detailed below are whitelisted/bypassed.
Note, if you are using zScaler Tunnel 2.0, additional changes are required as well as the changes documented on this page. For more information, please see Zscaler's documentation here.
RealVNC Connect apps (Server, Viewer and On-Demand Assist)
IP Addresses
| IPv4 address | TCP port | UDP port | Role |
|---|---|---|---|
| 212.119.29.177 | 443 | n/a | Cloud bootstrap services |
| 165.254.191.245 | 443 | n/a | |
| 165.254.191.229 | 443 | n/a | |
| 212.119.29.178 | 443 | n/a | Cloud team management services |
| 165.254.191.246 | 443 | n/a | |
| 165.254.191.230 | 443 | n/a | |
| 212.119.29.179 | 443 | n/a | |
| 165.254.191.247 | 443 | n/a | |
| 165.254.191.231 | 443 | n/a | |
| 212.119.29.181 | 443 | n/a | |
| 212.119.29.128/28 | 443 | 3478 11000-20000* |
Cloud connectivity services |
| 165.254.239.128/28 | 443 | 3478 11000-20000* |
|
| 165.254.191.192/28 | 443 | 3478 11000-20000* |
|
| 146.101.60.86 | 443 | n/a | Update notification service (optional, RealVNC Server only) |
* required for High Speed Streaming and Audio
Domains
| Domain | Role |
|---|---|
| *.services.vnc.com | RealVNC Connect cloud services |
RealVNC Connect Setup app
Domains
| Domain | Role |
|---|---|
| downloads.realvnc.com | Hosts downloads for RealVNC Server and RealVNC Viewer |
| manage.realvnc.com | RealVNC Connect Portal for signing into a RealVNC account |
RealVNC Connect API Access
IP Addresses
| IPv4 address | TCP port | Role |
|---|---|---|
|
146.101.60.69
|
443 | API gateway service |
Domains
| Domain | Role |
|---|---|
| connect-api.services.vnc.com | API gateway service |
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