shell:$ nslookup -timeout=2 -retry=1 'ns4.vv2.co.uk' Server: 1.1.1.1 Address: 1.1.1.1#53 Non-authoritative answer: Name: ns4.vv2.co.uk Address: 162.159.26.231 Name: ns4.vv2.co.uk Address: 2400:cb00:2049:1::a29f:1ae7