title: AWS EC2 / Route 53 reverse DNS lookup
body: <p>I have the following setup in EC2:</p>
  
  <p>A server which has an Elastic IP assigned to it and a DNS name entry in Route 53 pointing to that Elastic IP.</p>
  
  <p>Is it possible to retrieve the DNS name configured in Route 53 from the server that has the Elastic IP assigned? If yes, how can I do that?</p>