shell:$ nslookup -timeout=2 -retry=1 'ns2.celcom.net.my' Server: 75.98.161.224 Address: 75.98.161.224#53 Non-authoritative answer: Name: ns2.celcom.net.my Address: 203.82.64.14 Name: ns2.celcom.net.my Address: 2404:160:0:2:0:64:12:0