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88 TCP/IP Overview ENWW
Explained in more detail in the table “Network Class
Characteristics,” you will see how each network class differs further
by the leading bit identifier, the address range, the number of each
type available, and the maximum number of hosts each class allows.
Table A.2 Network Class Characteristics
Class Leading
Bit
Identifier
Address Range Maximum
number of
networks in
the class
Maximum
hosts in the
network
A 0 0.0.0.0 to
127.255.255.255
126 Over 16 Million
B 10 128.0.0.0 to
191.255.255.255
16,382 65,534
C 110 192.0.0.0 to
223.255.255.255
Over 2 Million 254