After completing the two-year Cisco CCNA course, I used my programming skills to write this subnet calculator. The program allows the user to enter an IP address and will display the Class (A, B, or C) and the binary representation of that address. The user can then create subnets based on ther number of required hosts, number of required subnets, or by the number of bits 'borrowed' from the original IP address. EZ-Subnet will then display each sub-network address, the broadcast address for each subnet, and the usable host addresses for each subnet.