Getting error "is not a registered domain" for a registered domain

Trying to add an additional domain to our account, getting error “is not a registered domain”.

Have checked our domain reseller account and it is registered, am able to search WHOIS records for the domain and getting the correct details.

Any suggestions on how this can be fixed?

Hi there,

Please ensure that your site has valid DNS records along with valid nameservers before trying to add them to Cloudflare. Please also ensure that the site is resolvable and then try again.