| コード | 概要
| | 1xx Informational
| | 100 | Continue
| | 101 | Switching Protocols
| | 2xx Successful
| | 200 | OK
| | 201 | Created
| | 202 | Accepted
| | 203 | Non-Authoritative Information
| | 204 | No Content
| | 205 | Reset Content
| | 206 | Partial Content
| | 3xx Redirection
| | 300 | Multiple Choices
| | 301 | Moved Permanently
| | 302 | Found
| | 303 | See Other
| | 304 | Not Modified
| | 305 | Use Proxy
| | 306 | (Unused)
| | 307 | Temporary Redirect
|
|
| コード | 概要
| | 4xx Client Error
| | 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
| | 426 | Upgrade Required
|
|
| コード | 概要
| | 5xx Server Error
| | 500 | Internal Server Error
| | 501 | Not Implemented
| | 502 | Bad Gateway
| | 503 | Service Unavailable
| | 504 | Gateway Timeout
| | 505 | HTTP Version Not Supported
|
|