Variable-Length Subnet Masking (VLSM) consists of segregating subnets into smaller segments, allowing network engineers to divide an IP address space into a hierarchy of subnets of different sizes, making it possible to create very different host subnets without account. waste a large number of addresses. This in turn can be a pretty annoying task, especially when it needs to be done several times, so I decided to do a powershell module to just tell you how many hosts I need in a given segment and it will tell me what the addressing is.