HTTP status codes

The following is a list of HTTP status codes. The most common status code are the 404 (not found), 403 (forbidden access), and 500 (internal server error).

Informational codes:
100 – Continue
101 – Switching Protocols
102 – Processing

Success codes:
200 – OK
201 – Created
202 – Accepted
203 – Non-Authoritative Information
204 – No Content
205 – Reset Content
206 – Partial Content
207 – Multi-Status
208 – Already Reported
226 – IM Used

Redirection codes:
300 – Multiple Choices
301 – Moved Permanently
302 – Found
303 – See Other
304 – Not Modified
305 – Use proxy
306 – Switch Proxy
307 – Temporary Redirect
308 – Permanent Redirect
308 – Resume Incomplete

Client error codes:
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 – Payload Too Large
414 – Request-URI Too Long
415 – Unsupported Media type
416 – Requested Range Not Satisfiable
417 – Expectation Failed
418 – I’m a teapot
419 – Authentication Timeout
420 – Method Failure
421 – Misdirected Request
422 – Unprocessable Entity
423 – Locked
424 – Failed Dependency
426 – Upgrade Required
428 – Precondition Required
429 – Too Many Requests
431 – Request Header Fields Too Large
440 – Login Timeout
444 – No Response
449 – Retry With
450 – Blocked by Windows Parental Controls
451 – Unavailable for Legal Reasons
451 – Redirect
494 – Request Head Too Large
495 – Cert Error
496 – No Cert
497 – HTTP to HTTPS
498 – Token expired/invalid
499 – Client Closed Request
499 – Token required

Server error codes:
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
507 – Insufficient Storage
508 – Loop Detected
509 – Bandwidth Limit Exceeded
510 – Not Extended
511 – Network Authentication Required
520 – Unknown Error
522 – Origin Connection Time-Out
598 – Network Read Time-Out Error
599 – Network Connection Time-Out Error

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