Address Classes - Lucent Technologies SLC ConnectReach User & Service Manual

IP Network Addresses
IP Network Addresses Description

Address Classes

Introduction
Class A networks
A-4 Issue 4 June 2002
Five network classes are used to group networks according to the number of
hosts on the network.These network classes are listed in the following table.
1HWZRUN
&ODVV 1XPEHU RI +RVWV
&ODVV $ &DQ FRQWDLQ PLOOLRQV RI KRVWV
&ODVV % &DQ FRQWDLQ WKRXVDQGV RI KRVWV
&ODVV & &DQ FRQWDLQ XS WR  KRVWV
&ODVV ' 8VHG WR DGGUHVV D JURXS RI FRPSXWHUV DOO DW
RQH WLPH ³PXOWLFDVW´ DGGUHVVHV 
&ODVV ( 5HVHUYHG
The following sections describe these five network classes.
As shown in the following figure, the uppermost bit of a class A network address is
always 0. The next 7 bits define the network and the last 24 bits define the host.
This allows 128 class A networks.
1
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
0 Network
The following table lists the address ranges and their status.
$GGUHVV 5DQJH

 WKURXJK 

2
Host
6WDWXV
5HVHUYHG
$YDLODEOH
5HVHUYHG
363-208-050
3
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