Domain forwarding in AWS Lightsail

Hello,

CNAME records cannot be configured at the top node (or zone apex) of a DNS namespace.

From Route 53's documentation:

The DNS protocol does not allow you to create a CNAME record for the top node of a DNS namespace, also known as the zone apex. For example, if you register the DNS name example.com, the zone apex is example.com. You cannot create a CNAME record for example.com, but you can create CNAME records for www.example.com, newproduct.example.com, and so on.

I've included links to documentation below, including a link to a community-provided historical context of CNAME records:

• Route 53: CNAME Record
• "Why can't a CNAME record be used at the apex (aka root) of a domain?"