Subnetcalculator

Stop tracking subnets in spreadsheets

Save, name, and organize the subnets you calculate — in one click, right here. Detect overlaps. Share with your team. No data models to learn, nothing to set up.

Managing subnets for more than one client?

Every client gets their own workspace, so their address plans never mix. That matters because most clients reuse the same defaults — when five different clients all hand you 192.168.1.0/24, per-client separation is the only way overlap detection still means anything.

Early access soon. Founding users get 50% off for life.

From the maker of subnetcalculator.dev — free tools used by thousands of engineers every month.