RFC 2050 (rfc2050) - Page 2 of 13

Internet Registry IP Allocation Guidelines

RFC 2050       Internet Registry IP Allocation Guidelines  November 1996


   This document does not describe private Internet address space and
   multicast address space.  It also does not describe regional and
   local refinements of the global rules and guidelines.

   This document can be considered the base set of operational
   guidelines in use by all registries.  Additional guidelines may be
   imposed by a particular registry as appropriate.

Table of Contents

    1.  Introduction.......................................2
    2.  Allocation Framework...............................4
    2.1  Guidelines for Internet Service Providers.........4
    2.2  Submission of Reassignment Information............6
    3.   Assignment Framework..............................7
    3.1  Common Registry Requirements......................7
    3.2  Network Engineering Plans.........................8
    3.3  Previous Assignment History.......................9
    3.4  Network Deployment Plans..........................9
    3.5  Organization Information..........................9
    3.6  Expected Utilization Rate.........................10
    4.   Operational Guidelines for Registries.............10
    5.   In-Addr.Arpa Domain Maintenance...................11
    6.   Right to Appeal...................................11
    7.   References........................................12
    8.   Security Considerations...........................12
    9.   Authors' Addresses................................13

1. Introduction

   The addressing constraints described in this document are largely the
   result of the interaction of existing router technology, address
   assignment, and architectural history.  After extensive review and
   discussion, the authors of this document, the IETF working group that
   reviewed it and the IESG have concluded that there are no other
   currently deployable technologies available to overcome these
   limitations. In the event that routing or router technology develops
   to the point that adequate routing aggregation can be achieved by
   other means or that routers can deal with larger routing and more
   dynamic tables, it may be appropriate to review these constraints.

   Internet address space is distributed according to the following
   three goals:

   1) Conservation: Fair distribution of globally unique Internet address
   space according to the operational needs of the end-users and Internet
   Service Providers operating networks using this address space.
   Prevention of stockpiling in order to maximize the lifetime of the



Hubbard, et. al.         Best Current Practice