I have installed an OpenVPN access server on an free tier EC2 instance with default VPC and connected to it. My ip is changed but when I checked dns leak using (https://www.dnsleaktest.com/), it is showing multiple EC2 server name(shown below).
IP Hostname ISP Country
3.18.181.28 ec2-3-18-181-28.us-east-2.compute.amazonaws.com. Amazon.com Columbus, United States
3.31.116.124 ec2-3-31-116-124.us-east-2.compute.amazonaws.com. Amazon.com Columbus, United States
3.18.128.150 ec2-3-18-128-150.us-east-2.compute.amazonaws.com. Amazon.com Columbus, United States
3.17.150.179 ec2-3-17-150-179.us-east-2.compute.amazonaws.com. Amazon.com Columbus, United States
Can anyone explain me How/Why these server being called and can these server owner see my ip address? And none of the above ip is my EC2 ip address.