ipcalc

Calculate subnets

low risk

interactive breakdown — edit the command and press Explain
$ 
What it does

Computes network, mask and broadcast addresses.

Examples
ipcalc 192.168.1.10/24Subnet details · explain & risk-check →
Related
ip
Open the full explainer →More in Networking

Reference text is hand-written and may be incomplete — check man ipcalc for your version. Test destructive commands on a non-production system first.