Subnet Calculator

A tool which will take your IP address and netmask and will calculate the resulting network, broadcast, Cisco wildcard mask
Subnet calculator will take your IP address and netmask and will calculate the resulting network, broadcast, Cisco wildcard mask, and host range.

Subnet calculator with support for CIDR (Classless Internet Domain Routing) and wildcard masks.

Enter your netmask(s) in CIDR notation (/25) or dotted decimals (255.255.255.0). Inverse netmasks are recognized. If you omit the netmask the subnet calculator uses the default netmask for the class of your network.

By giving the tool a second netmask, you can design subnets and supernets.

This is also intended to be a teaching tool and presents the subnetting results as easy-to-understand binary values.




Requirements:

Java

Free Download ( 216 KB )