Reserved Top Level DNS Names
draft-ietf-dnsind-test-tlds-13

The information below is for an old version of the document that is already published as an RFC
Document Type RFC Internet-Draft (dnsind WG)
Authors Donald Eastlake  , Aliza Panitz 
Last updated 2013-03-02 (latest revision 1999-02-25)
Stream Internet Engineering Task Force (IETF)
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INTERNET-DRAFT                                             Reserved TLDs
                                                           February 1999
                                                     Expires August 1999

                      Reserved Top Level DNS Names
                      -------- --- ----- --- -----

                         Donald E. Eastlake 3rd
                            Aliza R. Panitz

                        Status of This Document

        This draft is file name draft-ietf-dnsind-test-tlds-13.txt.
   Distribution of this document is unlimited. Comments should be sent
   to the DNS mailing list <namedroppers@internic.net> or to the
   authors.

   This document is an Internet-Draft and is in full conformance with
   all provisions of Section 10 of RFC2026.  Internet-Drafts are working
   documents of the Internet Engineering Task Force (IETF), its areas,
   and its working groups.  Note that other groups may also distribute
   working documents as Internet-Drafts.

   Internet-Drafts are draft documents valid for a maximum of six
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D. Eastlake, A. Panitz                                          [Page 1]



INTERNET-DRAFT                                             Reserved TLDs

Abstract

   To reduce the likelihood of conflict and confusion, a few top level
   domain names are reserved for use in private testing, as examples in
   documentation, and the like.  In addition, a few second level domain
   names reserved for use as examples are documented.

Table of Contents

      Status of This Document....................................1

      Abstract...................................................2
      Table of Contents..........................................2

      1. Introduction............................................3
      2. TLDs for Testing, & Documentation Examples..............3
      3. Reserved Example Second Level Domain Names..............4
      4. IANA Considerations.....................................4
      5. Security Considerations.................................4

      References.................................................5
      Authors Addresses..........................................5
      Expiration and File Name...................................5

D. Eastlake, A. Panitz                                          [Page 2]



INTERNET-DRAFT                                             Reserved TLDs

1. Introduction

   The global Internet Domain Name System is documented in [RFC 1034,
   1035, 1591] and numerous additional Requests for Comment.  It defines
   a tree of names starting with root, ".", immediately below which are
   top level domain names such as ".com" and ".us". Below top level
   domain names there are normally additional levels of names.

2. TLDs for Testing, & Documentation Examples

   There is a need for top level domain (TLD) names that can be used for
   creating names which, without fear of conflicts with current or
   future actual TLD names in the global DNS, can be used for private
   testing of existing DNS related code, examples in documentation, DNS
   related experimentation, invalid DNS names, or other similar uses.

   For example, without guidance, a site might set up some local
   additional unused top level domains for testing of its local DNS code
   and configuration. Later, these TLDs might come into actual use on
   the global Internet.  As a result, local attempts to reference the
   real data in these zones could be thwarted by the local test
   versions.  Or test or example code might be written that accesses a
   TLD that is in use with the thought that the test code would only be
   run in a restricted testbed net or the example never actually run.
   Later, the test code could escape from the testbed or the example be
   actually coded and run on the Internet. Depending on the nature of
   the test or example, it might be best for it to be referencing a TLD
   permanently reserved for such purposes.

   To safely satisfy these needs, four domain names are reserved as
   listed and described below.

                   .test
                .example
                .invalid
              .localhost

        ".test" is recommended for use in testing of current or new DNS
   related code.

        ".example" is recommended for use in documentation or as
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