HTTP 523
Origin Is Unreachable (Cloudflare)
Cloudflare
What does "HTTP 523 Origin Is Unreachable (Cloudflare)" mean?
Plain-English Meaning
Cloudflare-specific. Cloudflare can't find a route to the origin server.
Common Causes
- DNS misconfiguration pointing to wrong server
- Origin IP changed without updating Cloudflare
- Network outage between Cloudflare and origin
What Users Can Do
Wait — needs to be fixed by the site owner.
What Developers Can Do
Verify DNS records point to the correct origin IP. Check BGP routing if you control your own network.
Related Status Codes
520
Web Server Returned Unknown Error (Cloudflare) 521
Web Server Is Down (Cloudflare) 522
Connection Timed Out (Cloudflare) 524
A Timeout Occurred (Cloudflare)
Web Server Returned Unknown Error (Cloudflare) 521
Web Server Is Down (Cloudflare) 522
Connection Timed Out (Cloudflare) 524
A Timeout Occurred (Cloudflare)
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