Change "Not a registered domain" error

Currently, the error “Not a registered domain” when adding a zone appears if the domain has no current nameservers, the domain isn’t registered, or the domain name servers don’t contain any DNS records…and if the domain is registered but is using Cloudflare nameservers without being added to Cloudflare.

This feature request is to either improve the accuracy of the error message to reflect the actual issue or to display a generic error message that is less confusing.