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
You must update your Cloudflare DNS records to point accurately to your physical web hosting server's public IP address.
Frequently Asked Questions
Common questions about Cloudflare 1000 error
Change your DNS A record to your actual web host's IP address instead of a Cloudflare IP or a local address.