Class B Subnet

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A Class B subnet is the most common subnet class used by large organizations. There are 65,534 available IP addresses in a Class B subnet. A Class B subnet shares the first and second octets.

 
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)

 

See Also:
IP Address
Octet
Subnet
CIDR

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