Open Port Checker & TCP Ping

Test if a common service port is reachable from the internet, with connection time (a TCP ping).

GO DEEPERWhat do you want to uncover next?
🧩 See what this port normally runs🏢 Identify the network behind the host🔐 Check the host SSL

Terms explained

localhostWebSocketMySQLAmazon RDSContainerDaemon

Frequently asked questions

Which ports can I check?

A fixed list of common service ports (web, SSH, mail, databases). Arbitrary port scanning is not allowed.

Port shows closed but my service is running?

A firewall, security group or the service listening only on localhost can all block outside access.