Fit every department into 192.168.1.0/24

Pick a department, pick the smallest prefix that holds its hosts, then click the grid. Each cell is one address, and a block snaps to a start that is a multiple of its own size.

Prefix, with usable hosts under each

Start address (last number)

Pick a department to start.

192.168.1.0.64.128.192.255

Your allocation

Department	Hosts needed	Subnet	Mask	Usable range	Broadcast

Place every department to see the score.

Calculator

Any address with a prefix