shell:$ nslookup -timeout=2 -retry=1 'core-ruangguru.s3.amazonaws.com'
Server:		75.98.161.224
Address:	75.98.161.224#53

Non-authoritative answer:
core-ruangguru.s3.amazonaws.com	canonical name = s3-ap-southeast-1-w.amazonaws.com.
Name:	s3-ap-southeast-1-w.amazonaws.com
Address: 3.5.149.78
Name:	s3-ap-southeast-1-w.amazonaws.com
Address: 3.5.151.105
Name:	s3-ap-southeast-1-w.amazonaws.com
Address: 52.219.40.228
Name:	s3-ap-southeast-1-w.amazonaws.com
Address: 52.219.129.121
Name:	s3-ap-southeast-1-w.amazonaws.com
Address: 52.219.184.1
Name:	s3-ap-southeast-1-w.amazonaws.com
Address: 3.5.149.92
Name:	s3-ap-southeast-1-w.amazonaws.com
Address: 3.5.151.111
Name:	s3-ap-southeast-1-w.amazonaws.com
Address: 3.5.146.10