Cloudflare Edge Network

21 known error codes

CF-1000 Easy Fix

Cloudflare error 1000: DNS points to prohibited IP.

CF-1001 Easy Fix

Cloudflare error 1001: DNS resolution error.

CF-1002 Easy Fix

Cloudflare error 1002: DNS points to prohibited IP variant.

CF-1003 Easy Fix

Cloudflare error 1003: Direct IP access blocked by Cloudflare.

CF-1004 Easy Fix

Cloudflare error 1004: Host not configured for web traffic.

CF-1005 Easy Fix

Cloudflare error 1005: Owner policy denied access.

CF-1006 Easy Fix

Cloudflare error 1006: IP access denied by Cloudflare policy.

CF-1009 Easy Fix

Cloudflare error 1009: Country or region blocked by access policy.

CF-1010 Easy Fix

Cloudflare error 1010: Request denied by browser signature rule.

CF-1011 Easy Fix

Cloudflare error 1011: Access denied by security configuration.

CF-1015 Easy Fix

Cloudflare error 1015: Rate limit exceeded.

CF-1020 Easy Fix

Cloudflare error 1020: Request blocked by Cloudflare firewall rule.

CF-1033 Easy Fix

Cloudflare error 1033: Argo Tunnel routing issue.

CF-520 Moderate

Cloudflare error 520: Unknown origin error.

CF-521 Moderate

Cloudflare error 521: Origin web server is down.

CF-522 Moderate

Cloudflare error 522: Connection timed out between edge and origin.

CF-523 Moderate

Cloudflare error 523: Origin host unreachable.

CF-524 Moderate

Cloudflare error 524: Origin timed out after connection established.

CF-525 Moderate

Cloudflare error 525: SSL handshake failed between Cloudflare and origin.

CF-526 Moderate

Cloudflare error 526: Invalid SSL certificate on origin.

CF-530 Moderate

Cloudflare error 530: Origin unreachable due to policy or routing condition.