Network Subnet Calculator
Calculate subnet ranges, masks, broadcast addresses, and host counts for Class A, B, and C networks.
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About Subnet Calculator
Every IP Address has two components: the network address and the host address. The Subnet Mask separates these components. Sub-netting divides the host portion of an IP address into a subnet and host address. Use this Subnet Mask Calculator to retrieve sub-network information from an IP address and subnet mask. The commonly used netmasks for classed networks are Class A, Class B, and Class C. The Subnet Calculator divides an IP network into subnetworks by calculating network address, subnet mask, broadcast address, and host IP address range.