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

Non-authoritative answer:
Name:	duo.com
Address: 3.170.131.30
Name:	duo.com
Address: 3.170.131.88
Name:	duo.com
Address: 3.170.131.5
Name:	duo.com
Address: 3.170.131.68