IPV4 Address Categories

IP Address = = Network address + host address IP address is made up of 4 bytes, one byte is 8 bits, so it is a total of 32 bits, in dotted decimal notation, for example 192.168.1.1

IP Address Classification:
1, Class A address: IP address = = Network Address 1 bytes + host address 3 bytes
1.0.0.0 to 126.0.0.0
0.0.0.0 and 127.0.0.0 reserved

Private IP Address: 10.0.0.0 ~ 10.255.255.255

2, Class B address: IP address = = Network Address 2 bytes + host address 2 bytes
128.1.0.0. To 191.254.0.0
128.0.0.0 to 191.255.0.0 reserved

Private IP Address: 172.16.0.0.0 ~ 172.31.255.255

3. Class C Address: IP address = = Network Address 3 bytes + Host address 1 bytes
192.0.1.0 to 223.255.254.0
192.0.0.0 to 223.255.255.0 reserved

Private IP Address: 192.168.0.0 ~ 192.168.255.255

5. Class D Address:
For multipoint Broadcasting (multicast)
IP address does not identify the network, its address coverage is 224.0.0.0~239.255.255.255

4, E-type address:
Reserved for future use, his first byte range is 240~255, primarily for internet experimentation and development
240.0.0.0 to 255.255.255.254 reserved address
255.255.255.255 for broadcast addresses

IPV4 Address Categories