shell:$ nslookup -timeout=2 -retry=1 'doi.org'
Server: 1.1.1.1
Address: 1.1.1.1#53
Non-authoritative answer:
Name: doi.org
Address: 172.67.69.3
Name: doi.org
Address: 104.26.4.132
Name: doi.org
Address: 104.26.5.132
Name: doi.org
Address: 2606:4700:20::681a:584
Name: doi.org
Address: 2606:4700:20::681a:484
Name: doi.org
Address: 2606:4700:20::ac43:4503
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