Typable

This is a Cloudflare security mechanism that prevents a CNAME DNS record for one user's domain from resolving to a resource, like an R2 bucket, belonging to a different Cloudflare account. It is designed for administrators and developers using Cloudflare's DNS and hosting services to maintain strict control over their domain configurations.

• Cross-Account Protection: Blocks attempts to point a domain to a resource in another user's account, which is a common vector for domain hijacking or misconfiguration.
• Enforced Resource Ownership: Ensures that custom domains and CNAME records can only be configured to point to resources within the same Cloudflare account, maintaining clear ownership boundaries.
• Security Policy Enforcement: Automatically triggers an Error 1014 when a banned CNAME setup is detected, alerting users to the policy violation.
• Clear Resolution Path: Provides specific guidance for legitimate cases, such as configuring R2 custom domains correctly through the proper interface instead of manual DNS edits.