shell:$ nslookup -timeout=2 -retry=1 'do-calculate.com'
Server:		75.98.161.224
Address:	75.98.161.224#53

Non-authoritative answer:
Name:	do-calculate.com
Address: 104.21.54.38
Name:	do-calculate.com
Address: 172.67.223.104
Name:	do-calculate.com
Address: 2606:4700:3031::6815:3626
Name:	do-calculate.com
Address: 2606:4700:3031::ac43:df68