1. Informational 1xx ... 10.1  | 
1.  | 100 Continue ... 10.1.1  | 
2.  | 101 Switching Protocols ... 10.1.2  | 
2.  | Successful 2xx ... 10.2  | 
1.  | 200 OK ... 10.2.1  | 
2.  | 201 Created ... 10.2.2  | 
3.  | 202 Accepted ... 10.2.3  | 
4.  | 203 Non-Authoritative Information ... 10.2.4  | 
5.  | 204 No Content ... 10.2.5  | 
6.  | 205 Reset Content ... 10.2.6  | 
7.  | 206 Partial Content ... 10.2.7  | 
3.  | Redirection 3xx ... 10.3  | 
1.  | 300 Multiple Choices ... 10.3.1  | 
2.  | 301 Moved Permanently ... 10.3.2  | 
3.  | 302 Found ... 10.3.3  | 
4.  | 303 See Other ... 10.3.4  | 
5.  | 304 Not Modified ... 10.3.5  | 
6.  | 305 Use Proxy ... 10.3.6  | 
7.  | 306 (Unused) ... 10.3.7  | 
8.  | 307 Temporary Redirect ... 10.3.8  | 
4.  | Client Error 4xx ... 10.4  | 
1.  | 400 Bad Request ... 10.4.1  | 
2.  | 401 Unauthorized ... 10.4.2  | 
3.  | 402 Payment Required ... 10.4.3  | 
4.  | 403 Forbidden ... 10.4.4  | 
5.  | 404 Not Found ... 10.4.5  | 
6.  | 405 Method Not Allowed ... 10.4.6  | 
7.  | 406 Not Acceptable ... 10.4.7  | 
8.  | 407 Proxy Authentication Required ... 10.4.8  | 
9.  | 408 Request Timeout ... 10.4.9  | 
10.  | 409 Conflict ... 10.4.10  | 
11.  | 410 Gone ... 10.4.11  | 
12.  | 411 Length Required ... 10.4.12  | 
13.  | 412 Precondition Failed ... 10.4.13  | 
14.  | 413 Request Entity Too Large ... 10.4.14  | 
15.  | 414 Request-URI Too Long ... 10.4.15  | 
16.  | 415 Unsupported Media Type ... 10.4.16  | 
17.  | 416 Requested Range Not Satisfiable ... 10.4.17  | 
18.  | 417 Expectation Failed ... 10.4.18  | 
5.  | Server Error 5xx ... 10.5  | 
1.  | 500 Internal Server Error ... 10.5.1  | 
2.  | 501 Not Implemented ... 10.5.2  | 
3.  | 502 Bad Gateway ... 10.5.3  | 
4.  | 503 Service Unavailable ... 10.5.4  | 
5.  | 504 Gateway Timeout ... 10.5.5  | 
6.  | 505 HTTP Version Not Supported ... 10.5.6  |