Port Check Test

Check if specific ports are open on any IP address or domain

Run a port check

Enter a public target, choose a protocol and port, and verify connectivity from global locations.

Free test - no signup required

Target (IP Address or Domain)

Enter an IPv4 address, IPv6 address, or domain name

Protocol

Port Number

Timeout (ms)

UDP results may show as open or filtered when a service does not reply to the probe.

Common Ports

Choose Locations

Complete the check to enable testing.