Notice:

We've recently performed some software upgrades to both cPanel and the Client Area that has resulted in some of the KB articles appearing outdated and obsolete. We are working to update and/or remove the affected articles but this may take some time. We appreciate your patience!

Can I enable CloudFlare on a wildcard (*) sub-domain?

No, for security reasons, CloudFlare does not proxy traffic to a wildcard sub-domain. You have to explicitly list the sub-domain as a CNAME in your DNS records to be able to activate CloudFlare.