Subnet Calculator

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.

This tool takes your IP address and netmask and calculates the resulting broadcast, network, Cisco wildcard mask, and host range.

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.

No host given No netmask given (using default netmask of your network's class) Bla

`Address:`	`192.168.0.1`	`11000000.10101000.00000000. 00000001`
`Netmask:`	`255.255.255.0 = 24`	`11111111.11111111.11111111. 00000000`
`Wildcard:`	`0.0.0.255`	`00000000.00000000.00000000. 11111111`
`=>`
`Network:`	`192.168.0.0/24`	`11000000.10101000.00000000. 00000000`
`HostMin:`	`192.168.0.1`	`11000000.10101000.00000000. 00000001`
`HostMax:`	`192.168.0.254`	`11000000.10101000.00000000. 11111110`
`Broadcast:`	`192.168.0.255`	`11000000.10101000.00000000. 11111111`
`Hosts/Net:`	`254`	Class C, Private Internet