HTTP Status Code Directory
Instant searchable directory of all standard IETF/RFC HTTP response status codes with technical causes and debugging solutions.
OK
The request has succeeded. Standard response for successful HTTP requests.
Created
The request has succeeded and a new resource has been created.
No Content
The server successfully processed the request and is not returning any content.
Moved Permanently
The target resource has been assigned a new permanent URI.
Found (Temporary Redirect)
The target resource resides temporarily under a different URI.
Not Modified
Indicates that the resource has not been modified since the version specified by the request headers.
Bad Request
The server cannot or will not process the request due to something perceived to be a client error.
Unauthorized
Authentication is required and has failed or has not yet been provided.
Forbidden
The server understood the request but refuses to authorize it.
Not Found
The requested resource could not be found but may be available in the future.
Method Not Allowed
A request method is not supported for the requested resource.
Request Timeout
The server timed out waiting for the request.
Too Many Requests
The user has sent too many requests in a given amount of time (Rate limited).
Internal Server Error
A generic error message, given when an unexpected condition was encountered.
Bad Gateway
The server was acting as a gateway or proxy and received an invalid response from upstream.
Service Unavailable
The server cannot handle the request (due to overload or maintenance).
Gateway Timeout
The server was acting as a gateway or proxy and did not receive a timely response.
How to Use HTTP Status Code Directory & Lookup
Search Code
Type a code number (e.g. 403) or name (e.g. Forbidden).
Inspect Details
Read the official RFC specification, cause, and client vs server responsibility.
Copy Definition
Copy status definitions for documentation or error payloads.
About HTTP Status Code Directory & Lookup
Catalogs all standard RFC 9110, RFC 6585, and RFC 7231 HTTP status codes with semantic definitions and caching behavior.
Supported Formats
Operational Limits
- •Reference documentation
Key Features
- Instant real-time search filter
- Categorized by 1xx, 2xx, 3xx, 4xx, 5xx classes
- RFC specification citations
- Practical debugging advice for each code