shell:$ nslookup -timeout=2 -retry=1 '1000.udemy.com'
Server: 1.1.1.1
Address: 1.1.1.1#53
Non-authoritative answer:
Name: 1000.udemy.com
Address: 104.16.143.237
Name: 1000.udemy.com
Address: 104.16.142.237
Name: 1000.udemy.com
Address: 2606:4700::6810:8fed
Name: 1000.udemy.com
Address: 2606:4700::6810:8eed
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