Well Known URI's

"oh the irony!", that we need a well-known URL in order to find out which well-known URI's are actually well-known.

The table shown here only shows a summary of IANA's registered well-known-URL, along with a link to its definition.

The data on this page was sourced from:

• Original CSV data: iana.org/assignments/well-known-uris/well-known-uris-1.csv
• IANA Registry: iana.org/assignments/well-known-uris
• IANA Repo: github.com/protocol-registries/well-known-uris

Source Repo for this page: codeberg.org/japh/well-known-uris

Last Updated: 2026-06-20