HTTP 503 Service Unavailable
5xx – Server error
| Status code | 503 |
|---|---|
| Reason phrase | Service Unavailable |
| Class | 5xx – Server error |
| Reference | RFC 9110 |
Frequently asked questions
What does HTTP status 503 mean?
The server is temporarily overloaded or down for maintenance.
Is 503 an error?
Yes, a server error (5xx): the request was probably fine, but the server failed to fulfil it.
Where is HTTP 503 defined?
Status code 503 is specified in RFC 9110.