shell:$ nslookup -timeout=2 -retry=1 'hello.twttr.net'
Server:		75.98.161.224
Address:	75.98.161.224#53

Non-authoritative answer:
hello.twttr.net	canonical name = hello.twttr.net.cdn.cloudflare.net.
Name:	hello.twttr.net.cdn.cloudflare.net
Address: 104.18.42.5
Name:	hello.twttr.net.cdn.cloudflare.net
Address: 172.64.145.251
Name:	hello.twttr.net.cdn.cloudflare.net
Address: 2606:4700:440b::ac40:91fb
Name:	hello.twttr.net.cdn.cloudflare.net
Address: 2606:4700:4407::6812:2a05