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

Non-authoritative answer:
Name:	id.duolingo.com
Address: 54.242.188.117
Name:	id.duolingo.com
Address: 52.5.190.121
Name:	id.duolingo.com
Address: 54.165.202.37
Name:	id.duolingo.com
Address: 34.235.217.187
Name:	id.duolingo.com
Address: 34.207.22.86
Name:	id.duolingo.com
Address: 3.224.157.15
Name:	id.duolingo.com
Address: 3.225.168.186
Name:	id.duolingo.com
Address: 35.171.246.217