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In the Internet, the IP address is composed of a network number and a host number. When the Internet was originally designed, in order to facilitate addressing and hierarchical network construction, 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. A host on the network (including workstations, servers, etc.) on the network has a host ID corresponding to it.
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IP address (Internet Protocol Address) refers to the Internet Protocol address, also translated as Internet Protocol address.
The IP address is a unified address format provided by the IP protocol. It assigns a logical address to each network and each host on the Internet to shield the differences in physical addresses.
IP address addressing method
When the Internet was originally designed, in order to facilitate addressing and hierarchical network construction, each IP address included two identification codes (ID ), i.e. network ID and host ID. All hosts on the same physical network use the same network ID. A host on the network (including workstations, servers, etc.) on the network has a host ID corresponding to it. The Internet Committee has defined 5 IP address types to suit networks of different capacities, namely Class A ~ Class E.
Among them, categories A, B, and C3 (table below) are uniformly allocated globally by InternetNIC, and categories D and E are special addresses.
Category |
Maximum number of networks |
IP address range |
Maximum number of hosts in a single network segment |
Private IP address range |
A |
126(2^7-2) |
1.0.0.1-127.255.255.254 |
16777214 |
##10.0.0.0-10.255.255.255 |
16384(2^14) | 128.0.0.1-191.255.255.254 | 65534 | 172.16.0.0-172.31.255.255 | |
2097152(2^21) | 192.0.0.1-223.255.255.254 | 254 | ##192.168.0.0-192.168.255.255 |
1. Public address
The public address (Public address) is determined by Inter NIC (Internet Network Information Center (Internet Information Center) is responsible. These IP addresses are assigned to organizations that register and apply to Inter NIC. Direct access to the Internet through it. 2. Private address Private address (Private address) is a non-registered address and is exclusively for internal use of the organization. The reserved internal private addresses are listed belowClass A 10.0.0.0--10.255.255.255Class B 172.16.0.0--172.31.255.255C class 192.168.0.0--192.168.255.255 (Learning video sharing:Introduction to Programming
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