IPSub - Version 1.5 A convienent way to calculate IP address subnetting. Simply enter an address, select a subnet mask. The application will show the Host Address Range, Broadcast Address, and Subnet Address. The calculations are shown as binary octets to assist in understanding subnetting. An Address List can be generated showing subnet addresses, broadcast addresses and host address ranges for the the subnets calculated. This list can be printed or copied to the Windows' clipboard.