With this simple tool you can check whether any given port is open or closed on your IP. Only TCP protocol can be tested because of the state-less design of UDP. Valid TCP ports are between 1 - 65535
Your IP is: 18.104.22.168
This port on your IP is open. If you have any service (such as BitTorrent, SSH, web server) listening on this port, traffic will be forwarded and service accessible over this IP:port.
This port on your IP is closed. If any service is listening on this IP (e.g. BitTorrent, SSH, web server), traffic will not be forwarded and service will be inaccessible over this IP:port.