Amazon EC2 Instance has no public DNS assigned to it

Please follow the below steps to add dns hostnames to your EC2 Instances.

• Add Column VPC Id and check the VPC Id that your instance is assigned to.
• Go to console.aws.amazon.com
• Go To Services -> VPC
• Open Your VPCs
• select your VPC connected to your EC2 and
• Edit Summary---> Change DNS hostnames: to YES

Hope this helps.