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

Non-authoritative answer:
Name:	pt.duolingo.com
Address: 3.224.157.15
Name:	pt.duolingo.com
Address: 54.159.145.114
Name:	pt.duolingo.com
Address: 3.95.114.149
Name:	pt.duolingo.com
Address: 13.219.65.145
Name:	pt.duolingo.com
Address: 54.146.180.223
Name:	pt.duolingo.com
Address: 54.80.110.141
Name:	pt.duolingo.com
Address: 44.220.121.109
Name:	pt.duolingo.com
Address: 54.242.188.117