Short description of Advanced IP Address Calculator 1.1: The Advanced IP Address Calculator is a freeware Windows 95/98/ME/NT4.0/2000/XP/2003/Vista/2008 and Windows 7 (32 bit, 64 bit) utility that lets you to calculate every aspect of your subnet configuration in a few mouse clicks! It was designed for any network engineer who needs a fast way to determine subnets.