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IP Subnet Calculator

Credits: Andy Povey.
Thanks to Andy Povey for developing and providing the source code for this IP subnet calculator.

This is a more straightforward and faster IP subnet calculator, giving you a complete list of information concerning an IP address and Subnet Mask, including the Network and Host address size.

 
  Enter IP Address and Subnet Mask   Results
IP Address Start Host Address
Subnet Mask End Host Address
    Max No. of Hosts
    Network Address

Additional Information

Broadcast Address
Network Class
Network Address Size Bits
Host Address Size Bits