IP address of the network

0.0.0.0---255.255.255.255

IP address Classification (D.E) not open to the outside

Network category	Maximum number of networks	IP address range (, unique, cost)	Maximum number of hosts	Private IP address range (Do intranet IP, not direct access to the public network, such as school nets, no money)
A	126 (2^7-2)	1.0.0.0-126.255.255.255	2^24-2	10.0.0.0-10.255.255.255
B	16384 (2^14)	128.0.0.0-191.255.255.255	2^16-2	172.16.0.0-172.31.255.255
C	2097152 (2^21)	192.0.0.0-223.255.255.255	2^8-2	192.168.0.0-192.168.255.255

127.0.0.1 represents the current computer itself, the maximum IP range that can be used is (1-223)

For example, 1.255.255.255 represents the broadcast address of the current network; 1.0.0.0 represents the network itself and cannot be assigned

Broadcast address is an address that is designed to be sent to all workstations in the network at the same time

For example, 1.0.0.1 and 2.0.0.1 are not the same network segment, to communicate requires a router; communicate within the same network using a switch is OK

IP address of the network