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

Non-authoritative answer:
Name:	s.udemycdn.com
Address: 104.16.74.19
Name:	s.udemycdn.com
Address: 104.16.75.19
Name:	s.udemycdn.com
Address: 2606:4700::6810:4a13
Name:	s.udemycdn.com
Address: 2606:4700::6810:4b13