HTTP 510 Not Extended
5xx – Server error
| Status code | 510 |
|---|---|
| Reason phrase | Not Extended |
| Class | 5xx – Server error |
| Reference | RFC 2774 |
Frequently asked questions
What does HTTP status 510 mean?
Further extensions are required for the request (historic).
Is 510 an error?
Yes, a server error (5xx): the request was probably fine, but the server failed to fulfil it.
Where is HTTP 510 defined?
Status code 510 is specified in RFC 2774.