https://app.knowbase.one/vault/rfc/docid/6298
RFC5774: Considerations for Civic Addresses in the Presence Information Data Format Location Object (PIDF-LO): Guidelines and IANA Registry Definition
Internet Engineering Task Force (IETF) K. Wolf Request for Comments: 5774 A. Mayrhofer BCP: 154 nic.at Updates: 4776 March 2010 Ca...