nslookup

Query DNS servers

low risk

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

Interactive or one-shot DNS lookups; dig is preferred for scripts.

Examples
nslookup example.com 8.8.8.8Query a specific resolver · explain & risk-check →
Related
dig host
Open the full explainer →More in Networking

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