shell:$ nslookup -timeout=2 -retry=1 'validator.w3.org'
Server: 127.0.0.53
Address: 127.0.0.53#53
Non-authoritative answer:
Name: validator.w3.org
Address: 104.18.22.19
Name: validator.w3.org
Address: 104.18.23.19
Name: validator.w3.org
Address: 2606:4700::6812:1713
Name: validator.w3.org
Address: 2606:4700::6812:1613
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