Subnet Tool
A quick IPv4 subnet calculator: type an address with a prefix and get the network, broadcast, mask, wildcard, first and last host, total and usable addresses, and the address class. Runs locally.
Gjin brûkers
A quick IPv4 subnet calculator: type an address with a prefix and get the network, broadcast, mask, wildcard, first and last host, total and usable addresses, and the address class. Runs locally.