Web & Networking Tools
Port Number Reference Lookup
Look up TCP/UDP port numbers by number or service name with descriptions.
Loading tool…
What is Port Lookup?
Port numbers identify network services. Well-known ports (0-1023) are assigned by IANA. This reference tool maps between port numbers and service names.
How it works
Enter a port number or service name; the tool returns the protocol, official service name, description, and whether it is registered or dynamic.
- Enter your input. Type or paste your input into the field above — the tool responds instantly.
- Review the result. Output updates live as you type. Everything runs entirely in your browser.
- Copy or download. Use the Copy button to grab the result, or Download to save it as a file.
Examples
Realistic sample
Type or paste any realistic input — the tool computes the result locally and instantly.
Common mistakes
Expecting a server round-trip
Nothing is uploaded — every tool in this category runs entirely in your browser.