Open Port Checker
Check whether TCP ports are open and reachable on a public server — tested from our end, the way the outside world sees it.
Port Scanner
Public scan — up to 16 ports per scan, public hosts only. Private, loopback and internal targets are blocked.
Protocol
Quick Select
Quick Select (UDP)
| Port | Service / Details | Status | Latency |
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Enter a public hostname or IP address and a list of ports to find out which are open, closed or filtered. The check runs from our server, so it reflects how your service looks from the public internet — useful for confirming a firewall rule, a port-forward or a freshly deployed service.
For safety this public version tests only reachable public hosts — private, loopback and internal addresses are blocked — and limits how many ports you can check in one request. Scanning private hosts and saving scan history are available in the full admin dashboard.