List of HTTP status 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 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

422 Unprocessable Entity (WebDAV) (RFC 4918)

423 Locked (WebDAV) (RFC 4918)

424 Failed Dependency (WebDAV) (RFC 4918)

425 Unordered Collection

426 Upgrade Required (RFC 2817)

449 Retry With

450 Blocked