Look up stable HTTP response status codes by number or phrase and see which response class they belong to.
Result: Enter an HTTP status code or phrase.
HTTP response classes
- 1xx Informational: request received; processing continues.
- 2xx Success: the request was successfully received, understood and accepted.
- 3xx Redirection: further action is needed to complete the request.
- 4xx Client Error: the request cannot be fulfilled as sent.
- 5xx Server Error: the server failed to fulfill an apparently valid request.
Registry note
This local lookup focuses on stable registered codes. IANA can add temporary or new assignments, and software can emit non-standard codes. Check the live IANA registry when an unfamiliar code is not listed here.
References: IANA HTTP Status Code Registry and MDN HTTP response status codes.