503 503 Service Unavailable
The server is temporarily unable to handle requests, often because it is overloaded or under maintenance.
SEO impact
Google retries later. Short 503 outages are fine. Extended 503s lead to deindexing. Use a Retry-After header when you can.
At a glance
| Status code | 503 |
| Group | 5xx Server Errors |
| Class | 5xx |