Local / private IP addresses

Detail

  • Local private IP / are ONLY accessible from inside the network and not from the Internet,
  • "Network" refers to all devices connected to the Internet box (computer, smartphone, IP cameras, TV ... anything that uses the Internet)
  • It is thanks to the local IP address as the Internet knows that box and wondering what the Internet can deliver flows to the correct device,
  • All users of the same ISP have the same local IP addresses within the network.

Localhost - Netmask

Range
127.0.0.1
Name
localhost
Number
1

Addresses on the same network : 127.0.0.1, 255.255.255.0

Single Class A

Range
10.0.0.0 - 10.255.255.255
Name
Class A network
Number
16 777 216

Addresses on the same network : 10.0.0.0, 10.10.10.0, 10.0.0.1, 10.255.255.255, 10.10.10.10, 10.1.0.0

16 contiguous Class B

Range
172.16.0.0 - 172.31.255.255
Name
Class B networks
Number
1 048 576

Addresses on the same network : 172.16.0.0, 172.17.0.1, 172.16.10.0, 172.31.0.0, 172.16.1.1, 172.20.0.0

256 contiguous Class C

Range
192.168.0.0 - 192.168.255.255
Name
Class C Networks
Number
65 536

Addresses on the same network : 192.168.0.1, 192.168.0.12, 192.168.1.1, 192.168.0.2, 192.168.0.10