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

Non-authoritative answer:
smsservice.s3.amazonaws.com	canonical name = s3-1-w.amazonaws.com.
s3-1-w.amazonaws.com	canonical name = s3-w.us-east-1.amazonaws.com.
Name:	s3-w.us-east-1.amazonaws.com
Address: 3.5.6.112
Name:	s3-w.us-east-1.amazonaws.com
Address: 52.216.210.145
Name:	s3-w.us-east-1.amazonaws.com
Address: 16.15.183.249
Name:	s3-w.us-east-1.amazonaws.com
Address: 16.15.199.212
Name:	s3-w.us-east-1.amazonaws.com
Address: 16.15.217.159
Name:	s3-w.us-east-1.amazonaws.com
Address: 16.15.192.59
Name:	s3-w.us-east-1.amazonaws.com
Address: 3.5.1.120
Name:	s3-w.us-east-1.amazonaws.com
Address: 52.217.234.1