IP Subnet Calculator
Calculate IPv4 or IPv6 subnet information from an IP address and CIDR prefix length.
Subnet Information
Enter an IPv4 address. You may include the CIDR prefix directly in the address.
IPv4 prefixes range from /0 through /32. When a prefix is included with the IP address, it will override this field.
Result Options
Calculations are performed locally in your browser. IPv4 results may include a subnet mask, wildcard mask, network address, broadcast address, and usable host range. IPv6 does not use broadcast addresses and instead returns the network prefix and complete address range.