Class A Public & Private IP Address Range Class A addresses are for networks with large number of total hosts. Class A allows for 126 networks by using the first octet for the network ID. The first bit in this octet, is always zero. The remaining seven bits in this octet complete the network ID.

Why do we use Class A in networking?

Class A (0.0. 0.0 to 127.255. 255.255) for general use. Class A addresses are for large networks; they use 8 bits for the network ID and 24 bits for the host ID.

What is an example of a Class A address?

In a Class A type of network, the first 8 bits (also called the first octet) identify the network, and the remaining have 24 bits for the host into that network. An example of a Class A address is 102.168. 212.226. Here, “102” helps you identify the network and 168.212.