shell:$ nslookup -timeout=2 -retry=1 'pt.duolingo.com'
Server:		1.1.1.1
Address:	1.1.1.1#53

Non-authoritative answer:
Name:	pt.duolingo.com
Address: 18.234.18.47
Name:	pt.duolingo.com
Address: 98.90.88.198
Name:	pt.duolingo.com
Address: 3.92.115.112
Name:	pt.duolingo.com
Address: 98.94.116.37
Name:	pt.duolingo.com
Address: 44.199.153.15
Name:	pt.duolingo.com
Address: 18.214.205.40
Name:	pt.duolingo.com
Address: 100.50.173.124
Name:	pt.duolingo.com
Address: 34.232.88.99