shell:$ nslookup -timeout=2 -retry=1 'rubicon.com' Server: 1.1.1.1 Address: 1.1.1.1#53 Non-authoritative answer: Name: rubicon.com Address: 23.185.0.4 Name: rubicon.com Address: 2620:12a:8000::4 Name: rubicon.com Address: 2620:12a:8001::4