shell:$ nslookup -timeout=2 -retry=1 'ns.cloudflare.com'
Server:		1.1.1.1
Address:	1.1.1.1#53

Non-authoritative answer:
Name:	ns.cloudflare.com
Address: 173.245.58.100
Name:	ns.cloudflare.com
Address: 173.245.59.100