LanCalculator

Simply enter the IP address and prefix or subnet mask to see all the network parameters and calculate the address range that is actually in use, along with the available subnets and hosts. You can also divide the network into your own number of subnets and save them to a file for further work.

All data provided by LanCalculator (including IP addresses, networks, subnets and their IP addresses) can be easily copied to the clipboard or saved to a file.