Advanced IP Address Calculator is a free, easy-to-use IP subnet calculator that lets you to calculate every aspect of your subnet configuration in a few mouse clicks!
The calculator generates a color-coded bit map, breaking down the network, subnet, and host portion. It shows you the subnet host address range, the subnet ID, and the subnet broadcast address. The binary representation and hexadecimal representations of IP addresses are supported.
Free for Windows 95/98/ME/NT4.0/2000/XP/2003.