The IP Subnet Calculator performs subnet calculations for the given network address block, subnet mask, and maximum required hosts per subnet. It determines the network address, usable host range, broadcast address, subnet mask, wildcard mask, binary subnet mask, IP class, CIDR notation, IP type, and more. Both IPv4 and IPv6 are supported.
Enter an IPv4 address and select a subnet mask (CIDR prefix) to calculate network address, broadcast address, usable host range, and more.
Enter an IPv6 address and select a prefix length to calculate the network range, total number of IP addresses, and full expanded address.