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

Non-authoritative answer:
Name:	duolingo.com
Address: 52.72.247.53
Name:	duolingo.com
Address: 44.193.184.236
Name:	duolingo.com
Address: 3.224.77.27