shell:$ nslookup -timeout=2 -retry=1 'a1002.udemycdn.com'
Server:		75.98.161.224
Address:	75.98.161.224#53

Non-authoritative answer:
Name:	a1002.udemycdn.com
Address: 104.19.172.89
Name:	a1002.udemycdn.com
Address: 104.19.171.89
Name:	a1002.udemycdn.com
Address: 2606:4700::6813:ab59
Name:	a1002.udemycdn.com
Address: 2606:4700::6813:ac59