Adding only a subdomain

Sorry for the convoluted domain names, but the system thinks I’m posting multiple links.

I control the DNS for several subdomains of aaa(dot)com but I do not have access to the aaa(dot)com DNS. That server delegates my subdomains to my DNS.

My subdomain (call it sub(dot)aaa(dot)com for now) has its own subdomains (e.g.red(dot)sub(dot)aaa(dot)com) and several TXT records.

I understand from the documentation that I need to set up a CNAME for sub(dot)aaa(dot)com to point to Cloudflare. Presumably I would have to remove the A record I currently have that points to my server. Is it possible to have a DNS zone file with no A record, but with a CNAME?

Would this work?

If not, how else could I configure this?

Many thanks,
David.

You can’t delegate a subdomain into Cloudflare. The entire domain needs to use Cloudflare DNS. I suppose if you had an Enterprise plan, there’s a chance you could delegate a subdomain in.

If you want to CNAME an outside domain into your own domain, you would need a Business or Enterprise plan.

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