shell:$ nslookup -timeout=2 -retry=1 'dialog-dev-bucket.s3.ap-southeast-1.amazonaws.com'
Server:		1.1.1.1
Address:	1.1.1.1#53

Non-authoritative answer:
dialog-dev-bucket.s3.ap-southeast-1.amazonaws.com	canonical name = s3-r-w.ap-southeast-1.amazonaws.com.
Name:	s3-r-w.ap-southeast-1.amazonaws.com
Address: 3.5.147.68
Name:	s3-r-w.ap-southeast-1.amazonaws.com
Address: 3.5.151.115
Name:	s3-r-w.ap-southeast-1.amazonaws.com
Address: 3.5.151.174
Name:	s3-r-w.ap-southeast-1.amazonaws.com
Address: 52.219.128.95
Name:	s3-r-w.ap-southeast-1.amazonaws.com
Address: 3.5.149.148
Name:	s3-r-w.ap-southeast-1.amazonaws.com
Address: 3.5.151.249
Name:	s3-r-w.ap-southeast-1.amazonaws.com
Address: 52.219.128.235
Name:	s3-r-w.ap-southeast-1.amazonaws.com
Address: 3.5.149.188