| 1nn Informational - Request received, continuing process |
| 100 Continue |
| 101 Switching Protocols |
| |
| 2nn Successful Client Requests |
| 200 OK |
| 201 Created |
| 202 Accepted |
| 203 Non-Authoritative Information |
| 204 No Content |
| 205 Reset Content |
| 206 Partial Content |
| 207 Partial Update OK |
| |
| 3nn Client Request Redirected |
| 300 Multiple Choices |
| 301 Moved Permanently |
| 302 Moved Temporarily |
| 303 See Other |
| 304 Not Modified |
| 305 Use Proxy |
| 306 Proxy Redirect |
| 307 Temporary Redirect |
| |
| 4nn Client Request Errors |
| 400 Bad Request Usually a syntax problem in the specification of the URI |
| 401 Unauthorized A password or encryption key is missing or invalid. Possibly case sensitivity issue. |
| 402 Payment Required |
| 403 Forbidden |
| 404 Not Found |
| 405 Method Not Allowed |
| 406 None Acceptable |
| 407 Proxy Authentication Required |
| 408 Request Time-Out Client stopped the request before the server finished retrieving it. |
| 409 Conflict |
| 410 Gone |
| 411 Length Required |
| 412 Unless True |
| 413 Request Entity Too Large |
| 414 Request-URI Too Large |
| 415 Unsupported Media Type |
| 416 Range Not Satisfiable |
| 417 Expectation Failed |
| 418 Reauthentication Required |
| 419 Proxy Reauthentication Reuired |
| |
| 5nn Server Errors |
| 500 Internal Server Error Unable to retrieve the HTML doc because of a server-configuration issue. |
| 501 Not Implemented The web server doesn't support a requested feature. |
| 502 Bad Gateway |
| 503 Service Unavailable |
| 504 Gateway Time-Out |
| 505 HTTP Version not supported |
| 506 Partial update Not Implemented |