Port Number Lookup
Look up what service commonly runs on a given network port.
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Recognizing what service commonly runs on a given network port — is 443 HTTPS, is 22 SSH, what's 3306 — is useful for networking, security, and debugging, but there are far more assigned ports than anyone has memorized. This tool looks up what service commonly runs on a given network port, saving the search when you're trying to identify what a specific port number is typically used for.