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This article mainly introduces the classification and address range of ip addresses in the computer network, which has a certain reference value. Interested friends can refer to it. I hope you can learn a lot after reading this article.

The classification and address range of ip addresses are: 1, Class An IP addresses, ranging from 1.0.0.1 to 127.255.255.254 IP addresses, B IP addresses, 128.0.0.1 to 191.255.255.254 IP addresses, C IP addresses, 4, D IP addresses, 5, E IP addresses.

Classification and scope of IP addresses

1. Class An IP address

A Class An IP address means that in the four segments of the IP address, the first number is the network number and the remaining three numbers are the numbers of the local computer. The identification length of the network in the class An IP address is 8 bits, and the length of the host identification is 24 bits. The number of class A network addresses is relatively small, there are 126 networks, and each network can hold more than 16 million hosts.

The class An IP address range is 1.0.0.1 to 127.255.255.254.

2. Class B IP address

A Class B IP address means that in the four segments of the IP address, the first two numbers are network numbers. The identification length of the network in the class B IP address is 16 bits, and the length of the host identity is 16 bits. The class B network address is suitable for medium-sized networks, there are 16384 networks, and each network can hold more than 60, 000 computers.

The class B IP address range is 128.0.0.1-191.255.255.254.

3. Class C IP address

A Class C IP address means that in the four segments of the IP address, the first three numbers are network numbers and the remaining numbers are those of the local computer. The identification length of network in class C IP address is 24 bits, and the length of host identification is 8 bits. There are more than 2.09 million networks in class C network address. Suitable for small-scale local area networks, each network can only contain up to 254 computers.

Class C IP addresses range from 192.0.0.1 to 223.255.255.254.

4. Class D IP address

Class D IP addresses have historically been called multicast addresses, or multicast addresses. In Ethernet, a multicast address names a group of sites that should receive a packet in this network. The highest bit of a multicast address must be "1110", ranging from 224.0.0.0 to 239.255.255.255.

5. Class E IP address

Class E IP addresses start with "11110", and Class E IP addresses are reserved for future and experimental use.

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