Port Reference
Looks up the well-known service associated with a TCP/UDP port number, like 443 for HTTPS. Runs entirely in your browser — nothing is sent to a server.
Looks up the well-known service associated with a TCP/UDP port number, like 443 for HTTPS. Runs entirely in your browser — nothing is sent to a server.
Use cases
- Checking what service a port number in a firewall rule refers to
- Recalling which port a common protocol uses
Examples
Port 443
443
443: HTTPS
FAQ
Is my data sent to a server?
No — this tool runs entirely in your browser.