Apple TV only supports Legacy DNS. Let's configure ControlD on it.
Select and press on the "Settings" button.
Go down and press on "Network".
Press on your network connection.
Press on your network once again.
Go down and press on "DNS".
Enter the DNS address.
Input the DNS IP address into the field. If you're configuring our free DNS resolvers, you can use these:
If you are configuring a custom DNS resolver, you can find your custom DNS IP in the My Account section.