Search common HTTP response codes by number or meaning. The tool explains
what each status communicates and helps distinguish successful responses,
redirects, client errors, and server errors.
HTTP status classes
Range
Class
General meaning
100–199
Informational
The request is being handled or additional communication is involved.
200–299
Success
The request was successfully received, understood, or processed.
300–399
Redirection
The client may need to take additional action or retrieve the resource elsewhere.
400–499
Client Error
The request cannot be fulfilled because of an issue associated with the request.
500–599
Server Error
The server or an upstream service encountered a problem fulfilling the request.
