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HTTP Status Codes

Hypertext Transfer Protocol (HTTP) response status codes Wikipedia


1xx Informational Responses

HTTP status codes in the 1xx are typically informational.
Code Description
100Continue
101Switching Protocols
102Processing
103Checkpoint
122Request-URI too long

2xx Successful Responses

2xx Successful Responses
Code Description
200OK
201Created
202 Accepted
203 Non-Authoritative Information (since HTTP/1.1)
204 No Content
205 Reset Content
206 Partial Content
207 Multi-Status (WebDAV) (RFC 4918)
208Already Reported (WebDAV; RFC 5842)
226 IM Used (RFC 3229)

3xx Redirection Responses

HTTP status codes in the 3xx range pertain to redirection. The client must take additional action to complete the request.
Code Description
300 Multiple Choices
301 Moved Permanently
302 Found
303 See Other (since HTTP/1.1)
304 Not Modified
305 Use Proxy (since HTTP/1.1)
306 Switch Proxy
307 Temporary Redirect (since HTTP/1.1)
308 Resume Incomplete

4xx Client Error

HTTP status codes in the 4xx range indicate that a problem occurred with the request.
Code Description
400 Bad Request
401 Unauthorized
402 Payment Required
403 Forbidden
404 Not Found
405 Method Not Allowed
406 Not Acceptable
407 Proxy Authentication Required
408 Request Timeout
409 Conflict
410 Gone
411 Length Required
412 Precondition Failed
413 Request Entity Too Large
414 Request-URI Too Long
415 Unsupported Media Type
416 Requested Range Not Satisfiable
417 Expectation Failed
418 I'm a teapot (RFC 2324)
419 Authentication Timeout (not in RFC 2616)
420 Method Failure (Spring Framework)
420 Enhance Your Calm (Twitter)
422 Unprocessable Entity (WebDAV) (RFC 4918)
423 Locked (WebDAV) (RFC 4918)
424 Failed Dependency (WebDAV) (RFC 4918)
425 Unordered Collection (RFC 3648)
426 Upgrade Required (RFC 2817)
428 Precondition Required
429 Too Many Requests
431 Request Header Fields Too Large
440 Login Timeout (Microsoft)
444 No Response
449 Retry With
450 Blocked by Windows Parental Controls
451 Unavailable For Legal Reasons (Internet draft)
451 Redirect (Microsoft)
494 Request Header Too Large (Nginx)
495 Cert Error (Nginx)
496 No Cert (Nginx)
497 HTTP to HTTPS (Nginx)
499 Client Closed Request

5xx Server Error

Error codes in the 5xx range indicate that server is aware that it has encountered an error or is otherwise incapable of performing the request.
Code Description
500 Internal Server Error
501 Not Implemented
502 Bad Gateway
503 Service Unavailable
504 Gateway Timeout
505 HTTP Version Not Supported
506 Variant Also Negotiates (RFC 2295)
507 Insufficient Storage (WebDAV) (RFC 4918)
508 Loop Detected (WebDAV; RFC 5842)
509 Bandwidth Limit Exceeded (Apache bw/limited extension)
510 Not Extended (RFC 2774)
511 Network Authentication Required
520 Origin Error (Cloudflare)
521 Web server is down (Cloudflare)
522 Connection timed out (Cloudflare)
523 Proxy Declined Request (Cloudflare)
524 A timeout occurred (Cloudflare)
598 (Informal convention) network read timeout error
599 (Informal convention) network connect timeout error


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