My browser displays a "Server not found" error
If your browser displays a "Server not found" error when you try to browse to a domain (example.com) or a subdomain (www.example.com), here are some common explanations.
You didn't create a resource record set for the domain or subdomain name
If you don't create a resource record set for the domain or subdomain, then DNS doesn't know where to route traffic when someone enters that name in a browser. For more information, see Working with Resource Record Sets.
You created a resource record set but specified the wrong value
When you create a resource record set, it's easy to specify the wrong value, such as the IP address for a web server or the domain name that CloudFront assigned to your web distribution. If the resource record set exists but you're still getting a "Server not found" error, we recommend that you confirm that the value is correct.
The resource that you're routing traffic to is unavailable
If a resource record set specifies a resource such as a web server that's unavailable, a browser will return a "Server not found" error. We recommend that you check the status of the resource that you're routing traffic to.