Port forwarding test
Check whether a TCP port on your public IP address is open and reachable from the internet.
Usually under 4 seconds
IP Lens tries to open a TCP connection from its server to your public IP on the port you choose. If the connection succeeds, a service is listening and the port is reachable from the internet; this confirms port forwarding for game servers, cameras, NAS and remote access.
For safety, only the public IP that is visiting this page can be checked. A closed result can also be caused by carrier-grade NAT, a firewall, or a service that is not running. UDP ports cannot be tested this way.