When I spin up a machine in us-west-2 and give it an elastic IP, it gets a public DNS hostname like
ec2-XXX-XXX-XXX-XXX.us-west-2.compute.amazonaws.com
When I spin up a machine in us-east-1 and give it an elastic IP, it gets a public DNS hostname like
ec2-XXX-XXX-XXX-XXX.compute-1.amazonaws.com
Why the difference?
When I reassociate an elastic IP, will the public DNS hostname be the same?