HTTP Status Code Lookup
Look up what any HTTP status code means and which category it belongs to.
| Code | Meaning | Category | Description |
|---|---|---|---|
| 100 | Continue | Informational | The server has received the request headers and the client should proceed to send the body. |
| 101 | Switching Protocols | Informational | The server agrees to switch protocols as requested by the client. |
| 200 | OK | Success | The request succeeded. |
| 201 | Created | Success | The request succeeded and a new resource was created. |
| 202 | Accepted | Success | The request was accepted for processing, but processing isn't complete. |
| 204 | No Content | Success | The request succeeded but there's no content to return. |
| 301 | Moved Permanently | Redirection | The resource has permanently moved to a new URL — search engines transfer ranking signals to the new URL. |
| 302 | Found | Redirection | The resource temporarily resides at a different URL. |
| 304 | Not Modified | Redirection | The resource hasn't changed since the last request — the client should use its cached copy. |
| 307 | Temporary Redirect | Redirection | Like 302, but guarantees the request method won't change on the redirected request. |
| 308 | Permanent Redirect | Redirection | Like 301, but guarantees the request method won't change on the redirected request. |
| 400 | Bad Request | Client Error | The server couldn't understand the request due to invalid syntax. |
| 401 | Unauthorized | Client Error | Authentication is required and has failed or not been provided. |
| 403 | Forbidden | Client Error | The server understood the request but refuses to authorize it. |
| 404 | Not Found | Client Error | The server can't find the requested resource. |
| 405 | Method Not Allowed | Client Error | The request method is known but not supported for this resource. |
| 408 | Request Timeout | Client Error | The server timed out waiting for the request. |
| 409 | Conflict | Client Error | The request conflicts with the current state of the server. |
| 410 | Gone | Client Error | The resource is permanently gone, with no forwarding address — unlike 404, this is deliberate. |
| 418 | I'm a Teapot | Client Error | An April Fools' joke from RFC 2324 — a real, if rarely used, status code. |
| 429 | Too Many Requests | Client Error | The client has sent too many requests in a given time frame (rate limiting). |
| 500 | Internal Server Error | Server Error | The server encountered an unexpected condition. |
| 501 | Not Implemented | Server Error | The server doesn't support the functionality required to fulfill the request. |
| 502 | Bad Gateway | Server Error | The server, acting as a gateway, received an invalid response from an upstream server. |
| 503 | Service Unavailable | Server Error | The server isn't ready to handle the request, often due to maintenance or overload. |
| 504 | Gateway Timeout | Server Error | The server, acting as a gateway, didn't get a response in time from an upstream server. |
Processing happens locally in your browser. Nothing you enter is uploaded.
How It Works
Search by code number or name to filter the list, or browse all common status codes.
Example
404 means "Not Found" — the server can't find the requested resource.
Frequently Asked Questions
- What's the difference between a 301 and a 302 redirect?
- 301 means "moved permanently" and passes ranking signals to the new URL. 302 means "temporary" and search engines generally keep indexing the original URL.
- Does this tool check my URL's live status?
- No — this is a reference lookup for what each code means, not a live checker. Checking a live URL's status requires a server-side request due to browser security restrictions (CORS).
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