Issue with DNS Resolution and Unexpected Redirects/Error 1000

Hi Cloudflare Community,

I’m experiencing an issue with DNS resolution and unexpected behavior across two zones in my Cloudflare account. Here’s the setup and the problem:

Setup
Zone 1: example.com (Partial setup, enterprise account)
  • A Records:
    foo.example.com pointing to an origin IP (proxied).
    www.example.com pointing to an origin IP (proxied).
  • CNAME Records at Authoritative DNS Provider (Not a Cloudflare):
    foo.example.com -> www.example.com.cdn.cloudflare.net
    www.example.com -> www.example.com.cdn.cloudflare.net
Zone 2: example.net (Full setup, same enterprise account)
  • CNAME Record:
    foo.example.net -> foo.example.com (proxied).
Zone 3: example2.net (Full setup, free account)
  • CNAME Record:
    foo.example2.net -> foo.example.com (proxied).
Expected Behavior
For foo.example.net and foo.example2.net to resolve to the same origin IP as foo.example.com.

Actual Behavior
  • When accessing foo.example.net, I receive a 301 redirect to www.example.net. There are no redirect or page rules set up that would cause this behavior.
  • When accessing foo.example2.net, I receive the following error:
    Error 1000: DNS points to prohibited IP...
Questions
Why is foo.example.net redirecting to www.example.net despite no configured redirect rules?
Why is foo.example2.net returning an Error 1000?
How can I configure these records to resolve to the correct origin IP without issues?

Any insights or suggestions would be greatly appreciated!
Thank you!
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