I am not sure about that but I think IANA is quite open to recognizing new well-known URIs: https://www.iana.org/assignments/well-known-uris/well-known-uris.xh

I am not sure about that but I think IANA is quite open to recognizing new well-known URIs: https://www.iana.org/assignments/well-known-uris/well-known-uris.xhtml https://www.iana.org/assignments/well-known-uris/well-known-... Basically, assuming that you have a spec, I think it amounts to filing a PR or discussing it on a mailing list.