25
•
If the first bit is one, and the second bit is a zero, then the address is a Class B
address.
•
If the
first
two bits are both one and the
third bit
is
zero, then
it
is a Class C
address.
•
If
the
first
three
bits
are
all
one
and
the
fourth
bit
is
a
zero,
the
address
is
a
Class D address.
•
If the first four bits are all one, then it is a Class E address.
Here
is
the complete
table of each class
and
their
total
available
number
addresses
per
classes/network.
Table 2.1 IP Class table
Note that the ip range for 127.0.0.0 is not listed because 127.0.0.0 is reserved for
localhost. There are also some other reserved IP networks that are used for private
networks (local networks) [http://www.duxcw.com/faq/network/privip.htm]:
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