Port Checker
Test whether a TCP port is open on any host — verify your firewall rules and service exposure (use only on systems you own).
How to use
- 1Open the Port Checker tool page.
- 2Enter or paste your input into the provided fields.
- 3Press Run — the server processes it and sends the result back.
- 4Copy or download the result using the buttons provided.
Privacy & limitations
- Your input or upload is sent to our server for this run only, processed in memory, and never stored.
- Works on modern desktop and mobile browsers.
- Very large inputs may take a moment; the interface will show progress.
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