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: 16.15.191.206
Name:	s3-w.us-east-1.amazonaws.com
Address: 52.217.104.196
Name:	s3-w.us-east-1.amazonaws.com
Address: 52.217.204.65
Name:	s3-w.us-east-1.amazonaws.com
Address: 52.217.41.204
Name:	s3-w.us-east-1.amazonaws.com
Address: 54.231.197.241
Name:	s3-w.us-east-1.amazonaws.com
Address: 52.217.202.57
Name:	s3-w.us-east-1.amazonaws.com
Address: 16.15.184.27
Name:	s3-w.us-east-1.amazonaws.com
Address: 52.217.167.241