HTTP status codes and its meaning

HTTP status codes are the codes that the Web server uses to communicate with the Web browser or user agent.

Here is a list of HTTP status codes that might be returned:

    
    1xx:  Information
    
    100   Continue
    101   Switching Protocols
    103   Checkpoint
    
    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
    
    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
    
    5xx:  Server Error
    
    500   Internal Server Error
    501   Not Implemented
    502   Bad Gateway
    503   Service Unavailable
    504   Gateway Timeout
    505   HTTP Version Not Supported

Of the above the most common HTTP status codes are

   200   OK
   301   Moved Permanently
   403   Forbidden
   404   Not Found
   500   Internal Server Error