Variable Length Subnet Masking is a technique that allows network administrators to divide an IP address space to subnets of different sizes, unlike simple same-size subnetting. Learn more about VLSM
VLSM Subnet Calculator is intend for automate and simplify VLSM calculation process.
How to use: Enter major network address and mask in slash-format, like 192.168.1.0/24
Enter sizes (number of assignable ip addresses) of subnets to divide major network. You can specify subnetwork names instead of default.
You can change number of subnets at any time.
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