503 Service Unavailable

The server is temporarily unable to handle the request. Usually due to maintenance or overload.

Status Code503
NameService Unavailable
CategoryServer Error
MeaningThe server is temporarily unable to handle the request. Usually due to maintenance or overload.

Common Causes

Server overloaded — too many concurrent requests

Maintenance mode — server intentionally returning 503

Rate limiting — CDN or WAF blocking requests

Related Status Codes

500
Internal Server Error502
Bad Gateway504
Gateway Timeout

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