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

Non-authoritative answer:
Name:	www.duolingo.com
Address: 34.232.79.69
Name:	www.duolingo.com
Address: 44.210.169.152
Name:	www.duolingo.com
Address: 44.214.201.66
Name:	www.duolingo.com
Address: 52.73.65.211
Name:	www.duolingo.com
Address: 52.45.99.181
Name:	www.duolingo.com
Address: 18.232.246.195
Name:	www.duolingo.com
Address: 3.220.93.54
Name:	www.duolingo.com
Address: 98.95.168.248