shell:$ nslookup -timeout=2 -retry=1 'duolingo.us'
Server:		127.0.0.53
Address:	127.0.0.53#53

Non-authoritative answer:
Name:	duolingo.us
Address: 3.88.96.65
Name:	duolingo.us
Address: 32.194.249.229
Name:	duolingo.us
Address: 32.198.200.164