BCDRPulse

Down Checker / Error codes

Cloudflare error 522: connection timed out

Cloudflare tried to open a TCP connection to your origin and got no answer in time. The origin is offline, overloaded, or silently dropping Cloudflare's packets.

Where it failed: the origin behind Cloudflare

What visitors see

Cloudflare's "Connection timed out" page with a Ray ID.

Usual causes

  • The origin server is offline or overloaded.
  • A firewall drops (rather than refuses) Cloudflare's traffic.
  • The DNS record in Cloudflare points at an old or wrong IP address.
  • The origin's network is down.

How to tell which one it is

  • 522 is a timeout on connecting; 521 is a refused connection; 524 is a connection that worked but an answer that took over 100 seconds.
  • Check the A record in Cloudflare's DNS tab is the origin's current IP.

What to do

  1. Confirm the origin is up and reachable from another network.
  2. Fix the DNS record if the IP changed (a new server, a new load balancer).
  3. Allow Cloudflare's IP ranges in the firewall; make sure it is not rate-limiting them.

Check the site now

The Down Checker names the layer that failed (DNS, connection, TLS or the server) and decodes the error page it gets.

Free, no sign-up. Scan only sites you own or may test. 60 scans an hour per address.

Related codes