shell:$ nslookup -timeout=2 -retry=1 'r56mail.com'
Server: 1.1.1.1
Address: 1.1.1.1#53
Non-authoritative answer:
Name: r56mail.com
Address: 104.21.27.113
Name: r56mail.com
Address: 172.67.169.36
Name: r56mail.com
Address: 2606:4700:3031::ac43:a924
Name: r56mail.com
Address: 2606:4700:3035::6815:1b71
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