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

Non-authoritative answer:
static.duolingo.com	canonical name = d7mj4aqfscim2.cloudfront.net.
Name:	d7mj4aqfscim2.cloudfront.net
Address: 3.170.139.222
Name:	d7mj4aqfscim2.cloudfront.net
Address: 3.170.139.89
Name:	d7mj4aqfscim2.cloudfront.net
Address: 3.170.139.176
Name:	d7mj4aqfscim2.cloudfront.net
Address: 3.170.139.158