Cloudflare error 523: origin is unreachable
Cloudflare cannot find a route to your origin. The DNS record points at an address that does not exist or cannot be reached.
Where it failed: the origin behind Cloudflare
What visitors see
Cloudflare's "Origin is unreachable" page with a Ray ID.
Usual causes
- The A or AAAA record points at a wrong, private or retired IP address.
- The hosting provider changed the server's IP.
- A routing problem at the origin's network.
How to tell which one it is
- Look up the record in Cloudflare's DNS tab and compare it with the address your host shows for the server.
What to do
- Update the DNS record to the origin's current public IP.
- If the origin moved, check every record (www, the bare domain, subdomains).
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.