shell:$ nslookup -timeout=2 -retry=1 'ns3.it.com' Server: 75.98.161.224 Address: 75.98.161.224#53 Non-authoritative answer: Name: ns3.it.com Address: 162.159.10.96 Name: ns3.it.com Address: 2400:cb00:2049:1::a29f:a60