HTTP Status Lookup
Fast HTTP status code reference with grouping and search.
Total 59
100
Continue1xx
Server received headers; client can continue sending body.
101
Switching Protocols1xx
Server agrees to switch protocols.
102
Processing1xx
Request is being processed, response not yet available.
103
Early Hints1xx
Allows browser to preload resources while server prepares response.
200
OK2xx
Request succeeded and response returned.
201
Created2xx
Resource created successfully.
202
Accepted2xx
Request accepted but not yet processed.
203
Non-Authoritative Information2xx
Returned metadata is not identical to the origin server.
204
No Content2xx
Request succeeded with no content.
205
Reset Content2xx
Request succeeded; client should reset document view.
206
Partial Content2xx
Server returned partial content for range request.
207
Multi-Status2xx
XML message containing multiple status codes.
300
Multiple Choices3xx
Multiple options available for the resource.
301
Moved Permanently3xx
Resource moved permanently to a new URL.
302
Found3xx
Resource temporarily moved to a different URL.
303
See Other3xx
Should be found at another URL using GET method.
304
Not Modified3xx
Resource not modified; use cached version.
307
Temporary Redirect3xx
Temporary redirect, same method retained.
308
Permanent Redirect3xx
Permanent redirect with method preserved.
400
Bad Request4xx
Invalid request syntax or parameters.
401
Unauthorized4xx
Authentication required or failed.
402
Payment Required4xx
Reserved for future use.
403
Forbidden4xx
Server understood request but refuses to authorize it.
404
Not Found4xx
Requested resource not found.
405
Method Not Allowed4xx
Method not allowed for the resource.
406
Not Acceptable4xx
Cannot generate response based on Accept headers.
407
Proxy Authentication Required4xx
Must authenticate with proxy first.
408
Request Timeout4xx
Server timed out waiting for the request.
409
Conflict4xx
Request conflicts with current server state.
410
Gone4xx
Resource is permanently gone.
411
Length Required4xx
Content-Length header not specified.
412
Precondition Failed4xx
Precondition in request headers not met.
413
Payload Too Large4xx
Request payload exceeds size limits.
414
URI Too Long4xx
Request URI exceeds length limit.
415
Unsupported Media Type4xx
Unsupported media type in request.
416
Range Not Satisfiable4xx
Requested range cannot be satisfied.
417
Expectation Failed4xx
Expectation in headers cannot be met.
418
I'm a teapot4xx
Refuses to brew coffee in a teapot (RFC 2324).
421
Misdirected Request4xx
Request sent to server unable to produce response.
422
Unprocessable Entity4xx
Request is well-formed but semantically invalid.
423
Locked4xx
The resource being accessed is locked.
424
Failed Dependency4xx
Failed due to failure of a previous request.
425
Too Early4xx
Server unwilling to process a request that might be replayed.
426
Upgrade Required4xx
Client should switch to a different protocol.
428
Precondition Required4xx
Origin server requires the request to be conditional.
429
Too Many Requests4xx
Rate limit exceeded.
431
Request Header Fields Too Large4xx
Request header fields are too large.
451
Unavailable For Legal Reasons4xx
Resource unavailable due to legal reasons.
500
Internal Server Error5xx
Server encountered an unexpected error.
501
Not Implemented5xx
Server does not support the functionality.
502
Bad Gateway5xx
Gateway received an invalid response.
503
Service Unavailable5xx
Server is overloaded or under maintenance.
504
Gateway Timeout5xx
Gateway timed out waiting for upstream.
505
HTTP Version Not Supported5xx
Server does not support the HTTP version used.
506
Variant Also Negotiates5xx
Internal server configuration error.
507
Insufficient Storage5xx
Insufficient storage to complete the request.
508
Loop Detected5xx
Server detected an infinite loop while processing.
510
Not Extended5xx
Further extensions to the request are required.
511
Network Authentication Required5xx
Client needs to authenticate to gain network access.
About This Tool
This HTTP status lookup tool helps frontend, backend, and ops teams quickly find code meanings and descriptions. Search by code, name, or keywords, and filter by 1xx-5xx groups for debugging and API integration. Everything runs locally with no network dependency.
Features
- 🔎 Keyword Search: Find by code, name, or description
- 🧭 Group Filters: Jump to 1xx-5xx quickly
- 📋 Clear Meanings: English/Chinese names with descriptions
- ⚡ Instant Results: Live updates as you type
- 📌 Quick Copy: One-click copy for code and title
- 🛡️ Local Only: Data stays in your browser