shell:$ nslookup -timeout=2 -retry=1 'ns1.f5clouddns.com'
Server:		75.98.161.224
Address:	75.98.161.224#53

Non-authoritative answer:
Name:	ns1.f5clouddns.com
Address: 107.162.234.197
Name:	ns1.f5clouddns.com
Address: 2604:e180:1071::3:1