304: Not Modified. Used for caching purposes. It tells the client that the cached resource has not changed. The client can continue to use the same cached version of the response, speeding up the process.
307: Temporary Redirect. This replaces the 302 Found response code for use when a resource has been temporarily moved to a different URL. In this case, the method used must not be changed - if POST was used, POST must be used again.
308: Permanent Redirect. Similar to the 301 response code; the resource is now permanently located at another URL, specified by the Location: response header.
400 status code
The page is unavailable or there is a technical problem with the request.
400: Bad Request. The server is unable to respond due to a luxembourg mobile database client error.
401: Unauthorized. The client must authenticate itself to get a response to the request.
402: Payment Required. Reserved for future use; rarely used because no standard convention has been adopted.
403: Forbidden. The client lacks permission to access the content; for example, a password might be required.
404: Not Found. Very common on the web. The URL is not recognized; the resource does not exist.
405: Method Not Allowed. The received method is supported by the host server, but not by the target resource because it has been disabled.
406: Not Acceptable. The requested resource is only capable of producing content that is not acceptable based on the request's Accept headers.
407: Proxy Authentication Required. When using a proxy server, your browser must authenticate before it can proceed.
408: Request timed out. The server wanted to close the idle connection; the request was not fully completed before the timeout. Some servers do not send any message before closing the connection.
409: Conflict. Your request conflicted with the resourceserver available at that time.
410: Gone. The requested content has been permanently deleted from the server and will not be restored.
411: Length Required. The request was rejected because the Content-Length header field was not defined as expected by the server.
412: Precondition Failed. The server did not meet your browser's request header conditions.