shell:$ nslookup -timeout=2 -retry=1 'ns4.nic.do' Server: 75.98.161.224 Address: 75.98.161.224#53 Non-authoritative answer: Name: ns4.nic.do Address: 204.61.216.124 Name: ns4.nic.do Address: 2001:500:14:6124:ad::1