shell:$ nslookup -timeout=2 -retry=1 'englishtest-stage-7.duolingo.com'
Server:		75.98.161.224
Address:	75.98.161.224#53

Non-authoritative answer:
Name:	englishtest-stage-7.duolingo.com
Address: 3.214.2.174
Name:	englishtest-stage-7.duolingo.com
Address: 52.4.229.164
Name:	englishtest-stage-7.duolingo.com
Address: 184.73.221.64