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Port Checker

FREE NETWORK TOOL

Port Checker

Check one common service port on a public host you own or administer.

Domain or public host

Service port

I own this host or have permission to check it.

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GEEK LABS TECH · PORT CHECKER

Your results

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Send these diagnostic results to Geek Labs Tech with your question. Contact details are optional; include email or phone if you’d like a reply.

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Only your latest check can be attached, for 30 minutes. Review URLs and results before sharing sensitive details.

What to know

A single TCP connection, with no login or application commands. A timeout can mean filtering, an offline host or a network restriction.

Checks are limited to public Internet hosts. We use short timeouts and small responses to keep this service lightweight.

DNS queries use Google Public DNS; domain registration queries use public RDAP services. Privacy details.

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