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

Non-authoritative answer:
Name:	duolingo.com
Address: 100.27.67.45
Name:	duolingo.com
Address: 52.206.229.75
Name:	duolingo.com
Address: 13.223.158.205
Name:	duolingo.com
Address: 3.214.33.47