RFC 2916 (rfc2916) - Page 1 of 10

E

Network Working Group                                        P. Faltstrom
Request for Comments: 2916                             Cisco Systems Inc.
Category: Standards Track                                  September 2000


                          E.164 number and DNS

Status of this Memo

   This document specifies an Internet standards track protocol for the
   Internet community, and requests discussion and suggestions for
   improvements.  Please refer to the current edition of the "Internet
   Official Protocol Standards" (STD 1) for the standardization state
   and status of this protocol.  Distribution of this memo is unlimited.

Copyright Notice

   Copyright (C) The Internet Society (2000).  All Rights Reserved.

Abstract

   This document discusses the use of the Domain Name System (DNS) for
   storage of E.164 numbers.  More specifically, how DNS can be used for
   identifying available services connected to one E.164 number.
   Routing of the actual connection using the service selected using
   these methods is not discussed.

1. Introduction

   Through transformation of E.164 numbers into DNS names and the use of
   existing DNS services like delegation through NS records, and use of
   NAPTR [1] records in DNS [2] [3], one can look up what services are
   available for a specific domain name in a decentralized way with
   distributed management of the different levels in the lookup process.

1.1 Terminology

   The key words "MUST", "REQUIRED", "SHOULD", "RECOMMENDED", and "MAY"
   in this document are to be interpreted as described in RFC 2119 [4].

2. E.164 numbers and DNS

   The domain "e164.arpa" is being populated in order to provide the
   infrastructure in DNS for storage of E.164 numbers.  In order to
   facilitate distributed operations, this domain is divided into
   subdomains.  Holders of E.164 numbers which want to be listed in DNS





Faltstrom                   Standards Track