class
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... IP address to network
number is well known for class A, B, and C IP addresses, and
involves a simple mask operation. The needs of other classes ...
... class A, B, and C IP addresses, and
involves a simple mask operation. The needs of other classes
are not yet defined and are ignored for the rest of this RFC.
...
... class A net 10,
0.0.2.128.IN-ADDR.arpa for class B net 128.2, etc. Like the
first scheme, it uses in-place name space delegations ...
...
The ISI network is 128.9, a class B number. Suppose the ISI network
was organized into two levels of subnet ...
...
Depending on whether the IP address is class A, B, or C, mask off the
high one, two, or three bytes, respectively. Reverse the octets,
suffix ...