Cloudflare can't route to the origin — DNS mismatch or origin IP unreachable.
Cloudflare can't route to the origin — DNS mismatch or origin IP unreachable.
Verify the A/AAAA record for the origin and that the IP is publicly routable.
The Cloudflare edge before your origin ever sees the request. Look at the Ray ID in the response.
Cloudflare — CDN, WAF, and edge network in front of your origin.
Cloudflare could not reach the origin server, likely due to DNS issues.
HTTP 523 is a Cloudflare-specific error meaning Cloudflare cannot resolve the origin server's DNS or route to its IP address.
Complete site outage through Cloudflare. Will be treated as downtime by search engines.
LemWatch monitors DNS resolution as part of its checks and can detect when origin IP changes cause reachability issues.