Private IP address and public IP address

1, private IP address
, if the formation of a tissue inside the LAN, the IP address used for communication within a LAN only, and not directly connected to the Internet, with the following rules set private IP address of the LAN:
(1) 10 * before 8 is a network number, a total of 16,777,216 addresses
(2) 172.16. to 172.31., first 12 bits is the network number, a total of 1,048,576 addresses
(3) 192.168. *, the former 16 is a network number, a total of 65,536 addresses
2, public IP network
, such as 1, contained in the range, have become private IP, called the rest of the global IP (or public IP).