TCP/UDP Port Number Lookup

Enter a service name (e.g. tcpmux) or port number (e.g. 1) to see details for both TCP and UDP protocols.

What is a TCP/UDP Service Mapper?

This tool lets you quickly look up the details of a TCP or UDP port by either its service name or port number. It's useful for network engineers, students, and anyone working with firewalls, servers, or network troubleshooting. Enter a port number (like 1) or a service name (like tcpmux) to see the protocol, description, and more.

  • Service Name: The official name of the service (if any).
  • Port Number: The port used by the service.
  • Transport: TCP or UDP protocol.
  • Description: A short explanation of the service or port usage.

This mapper uses a built-in database for instant lookups. For more ports, see the IANA Service Name Registry.