https://app.knowbase.one/vault/rfc/docid/6591
RFC6061: Uniform Resource Name (URN) Namespace for the National Emergency Number Association (NENA)
Internet Engineering Task Force (IETF) B. Rosen Request for Comments: 6061 NeuStar Category: Informational January 2011 ISSN: 2070-1721 Uniform Resource Name (URN) Namespace for the National Em...