Terms of use
Last updated October 27, 2026
Information only
The site reports what the IANA port registry records. It is reference information, not technical, legal or security advice, and it does not say what software uses a given number on any network.
Accuracy
Pages are rebuilt from the registry and the RFC Editor index, and each page shows the registry date it was built from. The registry changes often, so a page can lag behind it. For an authoritative answer, check the IANA registry itself.
Reuse
The registry is in the public domain under CC0 1.0. The text, tables and design of this site are the work of its editor; short quotations with a link are welcome.
Links
Links to iana.org and rfc-editor.org lead to sites this site does not control.