shell:$ nslookup -timeout=2 -retry=1 'stage7.duolingo.com'
Server:		127.0.0.53
Address:	127.0.0.53#53

Non-authoritative answer:
Name:	stage7.duolingo.com
Address: 184.73.250.65
Name:	stage7.duolingo.com
Address: 32.194.67.106
Name:	stage7.duolingo.com
Address: 44.218.255.120
Name:	stage7.duolingo.com
Address: 3.214.28.70