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This article is about which three kinds of ip addresses are commonly used and what they are. The editor thought it was very practical, so I shared it with you as a reference. Let's follow the editor and have a look.

Commonly used ip addresses are divided into three categories A, B and C. The range of Class An is "1.0.0.1-127.255.255.254", that of Class B is "128.0.0.1-191.255.255.254", and that of Class C is "192.0.0.1-223.255.255.255.254".

IP address (Internet Protocol Address) refers to the Internet protocol address, which is also translated as the Internet protocol address. IP address is a unified address format provided by IP protocol, which assigns a logical address to every network and host on the Internet to shield the differences in physical addresses.

When the Internet was originally designed, in order to facilitate addressing and hierarchical construction of the network, each IP address included two identification codes (ID), namely the network ID and the host ID. All hosts on the same physical network use the same network ID, and a host on the network (including workstations, servers, routers, etc.) has a host ID corresponding to it. The Internet committee defined five types of IP addresses to suit networks of different capacities, namely, Class A ~ Class E.

Among them, A, B and C 3 are assigned by InternetNIC all over the world, which are the three commonly used ip addresses, while D and E are special addresses.

Three types of commonly used ip addresses

1. Class An IP address: a Class An IP address consists of a 1-byte network address and a 3-byte host address. The highest bit of the network address must be "0", ranging from 1.0.0.0 to 126.0.0.0. There are 126 Class A networks available, each of which can accommodate more than 100 million hosts.

2. Class B IP address: a Class B IP address consists of a 2-byte network address and a 2-byte host address. The highest bit of the network address must be "10", ranging from 128.0.0.0 to 191.255.255.255. There are 16382 Class B networks available, each of which can accommodate more than 60, 000 hosts.

3. Class C IP address: a Class C IP address consists of a 3-byte network address and a 1-byte host address. The highest bit of the network address must be "110". The range is from 192.0.0.0 to 223.255.255.255. There are more than 2.09 million class C networks, each of which can accommodate 254hosts.

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