shell:$ nslookup -timeout=2 -retry=1 'hello.twttr.net'
Server: 1.1.1.1
Address: 1.1.1.1#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: 2606:4700:4407::6812:2a05
Name: hello.twttr.net.cdn.cloudflare.net
Address: 2606:4700:440b::ac40:91fb
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