An IP Address is made up of four octets. 18.104.22.168 is split in four sections separated by a period. Each section is an octet. An octets value ranges from 0 to 255. The table below gives an example of a Class B Subnet it shows it
shares the first an second octet.
|Class B Subnet |
|IP Address Class ||Total # Of Bits For Network ID / Host ID ||1st Octet ||2nd Octet ||3rd Octet ||4th Octet |
|Class B ||16/16 ||11111111 (255) ||11111111(255) ||00000000(0) ||00000000(0) |