RFC 1375 (rfc1375) - Page 1 of 7

Suggestion for New Classes of IP Addresses

Network Working Group                                        P. Robinson
Request for Comments: 1375                        Tansin A. Darcos & Co.
                                                            October 1992


               Suggestion for New Classes of IP Addresses

Status of this Memo

   This memo provides information for the Internet community.  It does
   not specify an Internet standard.  Distribution of this memo is
   unlimited.

Abstract

   This RFC suggests a change in the method of specifying the IP address
   to add new classes of networks to be called F, G, H, and K, to reduce
   the amount of wasted address space, and to increase the available IP
   address number space, especially for smaller organizations or classes
   of connectors that do not need or do not want a full Class C IP
   address.

Table of Contents

   Introduction . . . . . . . . . . . . . . . . . . . . . . . . . .   1
   Suggestion for new IP address classes  . . . . . . . . . . . . .   2
       Current Class C Address . . . . . . . . . . . . . . . . . .    3
       Proposed new Class C Address  . . . . . . . . . . . . . . .    4
       Proposed "Class F" address  . . . . . . . . . . . . . . . .    4
       Proposed "Class G" address  . . . . . . . . . . . . . . . .    4
       Proposed "Class H" address  . . . . . . . . . . . . . . . .    5
       Proposed "Class K" address  . . . . . . . . . . . . . . . .    5
   Optional selection of routing codes by region  . . . . . . . . .   5
   Summary  . . . . . . . . . . . . . . . . . . . . . . . . . . . .   6
   Notes  . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   6
   Security Considerations  . . . . . . . . . . . . . . . . . . . .   7
   Author's Address . . . . . . . . . . . . . . . . . . . . . . . .   7

Introduction

   Currently, IP addresses on the Internet are 32-bit quantities which
   are generally represented as four decimal numbers from 0 to 255,
   separated by periods, sometimes called a "dotted" decimal number.
   The current numbering scheme provides in general for three classes of
   networks in general use (A,B, and C), and two other classes of
   networks (D, E).

   The Class A networks assign a large address space for the particular



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