A list of all official .well-known files and paths: https://www.iana.org/assignments/well-known-uris/well-known-uris.xhtml https://www.iana.org/assignments/wel

A list of all official .well-known files and paths: https://www.iana.org/assignments/well-known-uris/well-known-uris.xhtml https://www.iana.org/assignments/well-known-uris/well-known-... Wikipedia knows some less official ones too: https://en.wikipedia.org/wiki/List_of_/.well-known/_services_offered_by_webservers https://en.wikipedia.org/wiki/List_of_/.well-known/_services...