Server errorsNon-standard, Cloudflare
523Origin Is Unreachable
A content network could not find a route to your origin server at all.
Browse all HTTP status codesWhen you see it
Normally a DNS or routing problem rather than a server problem: a record pointing at an address that no longer exists, or an origin that has moved without its configuration being updated.
Check the address the origin record actually resolves to before looking at the server itself. A 523 very often follows a migration where the machine moved and one record was never updated to match.
Look up another one
Open
Type a code, a partial code like 40, or any word from a name or description. Everything runs in your browser.
Filter
Copy format
Status codes
69 of 69 codes. Click a row to copy it.
1xx Informational (4)
2xx Success (10)
3xx Redirection (8)
4xx Client errors (31)
5xx Server errors (16)