shell:$ nslookup -timeout=2 -retry=1 'cdn.s3.amazonaws.com'
Server:		1.1.1.1
Address:	1.1.1.1#53

Non-authoritative answer:
cdn.s3.amazonaws.com	canonical name = s3-ap-southeast-1-w.amazonaws.com.
Name:	s3-ap-southeast-1-w.amazonaws.com
Address: 3.5.151.251
Name:	s3-ap-southeast-1-w.amazonaws.com
Address: 3.5.147.115
Name:	s3-ap-southeast-1-w.amazonaws.com
Address: 3.5.149.98
Name:	s3-ap-southeast-1-w.amazonaws.com
Address: 3.5.149.184
Name:	s3-ap-southeast-1-w.amazonaws.com
Address: 52.219.164.28
Name:	s3-ap-southeast-1-w.amazonaws.com
Address: 3.5.151.67
Name:	s3-ap-southeast-1-w.amazonaws.com
Address: 52.219.132.24
Name:	s3-ap-southeast-1-w.amazonaws.com
Address: 52.219.37.24