Private IP

Private IP is in local LAN IP and the matching is public IP (Internet IP)

Along with the development of private IP network, to save allocated registered IP address, a group of IP address was taken out and used exclusively for private IP network, known as private IP address.

Private IP address range:

A: 10.0.0.0 ~ 10.255.255.255/8

B: 172.16.0.0 ~ 172.31.255.255/16

C: 192.168.0.0 ~ 192.168.255.255/24

These addresses are not be Internet distribution on the Internet, they also won't be routing, although they cannot directly and Internet network connection, but by technical means can still and Internet communications. We can according to need to choose the appropriate address class, will these addresses in internal LAN as public IP address equally use. In the Internet, some don't need and Internet communications equipment, such as printer, manageable hubs to wait to also can use these address to save IP address resources.