https://app.kbone.net/vault/rfc/docid/9095
RFC8396: Managing, Ordering, Distributing, Exposing, and Registering Telephone Numbers (MODERN): Problem Statement, Use Cases, and Framework
Internet Engineering Task Force (IETF) J. Peterson Request for Comments: 8396 NeuStar, Inc. Category: Informational T. McGarry ISSN: 2070-1721 July 2018 ...