ONLINE VLSM Calculator

Step 1: Enter your Address Block and the subnet mask associated: (eg: 192.168.1.0/24)

Step 2: Add Networks: Enter the number of addresses you need in each network, after applying the scalability percentage.

After entering the number for each network, click add or press Enter to add another network.
(example: You need 1 network with 50 addresses, 1 network with 217 addresses and 1 point-to-point
link. Simply type 50 [Enter] 217 [Enter] 2 [Enter])

Networks Added: