Cloudflare Edge Errors
Cloudflare 1000 DNS Points to Prohibited IP
DNS Points to Prohibited IP
What 1000 Means
The 1000 error on the Cloudflare Edge Errors indicates dns points to prohibited ip. This typically occurs due to a record pointing to a local/loopback ip.
Error 1000 occurs gracefully when Cloudflare detects that the origin IP in the DNS settings points to an address that creates an infinite loop or a black hole.
Technical Background
Cloudflare enforces strict safety boundaries to prevent traffic loops. If a request hits the edge, and the edge sees the origin is ALSO the edge, it throws a 1000.
It prevents infinite routing magnification storms across their global backbone.
Common Causes
- A record pointing to a local/loopback IP
- A record pointing directly to a Cloudflare proxy IP
- Misconfigured reverse proxy loop architecture
Typical Scenarios
- A user incorrectly points their A record to 127.0.0.1 (localhost).
- A user mistakenly copies the Cloudflare edge IP from a ping test and pastes it as their origin IP.
What to Know
Updating Cloudflare DNS records to accurately point to the physical web hosting server's public IP address resolves the loop condition.
Frequently Asked Questions
Common questions about Cloudflare 1000 error
Updating the DNS A record to the actual web host's IP address instead of a proxy or local address resolves the loop.