shell:$ nslookup -timeout=2 -retry=1 'm.twitter.com'
Server: 127.0.0.53
Address: 127.0.0.53#53
Non-authoritative answer:
m.twitter.com canonical name = s.twitter.com.
Name: s.twitter.com
Address: 172.66.0.227
Name: s.twitter.com
Address: 162.159.140.229
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