shell:$ nslookup -timeout=2 -retry=1 'dns1.registrar-servers.com'
Server:		75.98.161.224
Address:	75.98.161.224#53

Non-authoritative answer:
Name:	dns1.registrar-servers.com
Address: 156.154.132.200
Name:	dns1.registrar-servers.com
Address: 2610:a1:1024::200