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IPv4 Wildcard Calculator

Created by Raymond Ferguson
PHP Subnet Calculator © 2008

This subnet calculator takes an IP address and netmask and calculates the resulting broadcast, network, Cisco wildcard mask, and host range. By giving a second netmask, you can design subnets and supernets. It is also intended to be a teaching tool and presents the subnetting results as easy-to-understand binary values.

IP & Mask or CIDR:        
Use IP & CIDR Netmask:
Or IP & Netmask:
Or IP & Wildcard Mask: