RFC 1375 (rfc1375) - Page 5 of 7

Suggestion for New Classes of IP Addresses

RFC 1375              New Classes of IP Addresses           October 1992


   connected IP addresses.  Class H is to be defined as follows:

        The eighth type of address, class H, has a 22-bit network
        number, and a 3-bit local address.  The seven highest-order bits
        are set to 1-1-0-1-1-1-0.  This allows 4,194,304 Class H
        addresses [5].

                        1                   2                   3
    0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
   |             |                                           |Local|
   |1 1 0 1 1 1 0|              NETWORK                      | Addr|
   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+

                      Proposed "Class H" address

   Class K is for sites which either will only have one or two connected
   addresses [6].  Class K is to be defined as follows:

        The eighth type of address, class K, has a 25-bit network
        number, and a 1-bit local address.  The seven highest-order bits
        are set to 1-1-0-1-1-1-1.  This allows 33,554,432 Class K
        addresses [7].

                        1                   2                   3
    0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
   |           |                                                 |*|
   |1 1 0 1 0 0|              NETWORK                            | |
   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+

                       * = Local Address, 1 or 0
                      Proposed "Class K" address

Optional selection of routing codes by region

   Because of the possibility of confusion, some method similar to the
   international dialing plan might be set up, in which bits 5-8 in
   Class F, bits 7-10 in Class H, and bits 6-9 in Class K could be used
   to define what part of the world the particular address is in, in a
   manner similar to the international telephone dialing system, which
   uses the first digit of the international telephone number to
   determine the region being used.  The current method for assigning
   international dialing codes is:







Robinson