AWS IP Address Mapping
In AWS, all S3 addresses take on the public URL format. However, even though an AWS instance may use the public URL format, AWS cleverly redirects the traffic to the internal AWS network — and imposes no fee for the traffic. Route 53 may seem like an odd name that’s perhaps reminiscent of French national highways. The name actually refers to DNS itself — DNS is used to route traffic requests, and DNS traffic communicates on port 53.