SEO Glossary 0-9
200: HTTP Header Status 200 designates “OK”. The request has been accepted successfully and your web page has been loaded properly in the browser. 200 statuses represents that information returns with a response.
301: HTTP Header Status 301 indicates “Moved permanently”. The web page permanently moved to the new location and redirects the server to a new web location. It’s a web site status code which is informed to the search engine spider that the page has been permanently moved. Using 301 redirect methods it’s possible to move a webpage to another web address without loosing current ranking on SERP.
302: HTTP Header Status 302 refers “Found”. The file and requested resource Moved Temporary to the different URI. Since the redirection might be changed on occasion, the client should carry on to use the Request-URI for future requests. This reaction is only cacheable if indicated by a Cache-Control or Expires header field.
304:HTTP Header Status 304 describes “Not Modified”. When the client has performed a provisional GET request and access is permitted, but the document must not modify, the server will respond with this status code.
307:HTTP Header Status 307 defines “Temporary Redirect” definition to describe a Server response 307 code basically informs the requested resource resides provisionally under a different URI. Since the redirection can be altered on occasion, the Client should carry on to use the Request-URI for future requests.
400: HTTP Header Status 400 describes “Bad Request” syntax problem in the request or it could not be fulfilled and implicit by the server and the client should not be repeating the request without modifications.
401: HTTP Header Status 401 clarifies “Unauthorized”. The request requires user authentication. The client is not authorized to access data. The response by client must be including a www-Authenticate header field containing a challenge applicable to the requested resource.
403: HTTP Header Status 403 explains "Forbidden” sever understand the request is forbidden to complete it. Authorization will not help and the request should not be repeated.
404: HTTP Header Status “Not Found”. The file does not exist and the server unable to located the URL.
410: HTTP Header Status “Gone”. This is enduringly condition where requested resources is no longer available at the server and no any forwarding URL is known.
500: HTTP Header Status “Internal Server Error” This is basically unforeseen error and the server could not fulfill the request because of an unexpected situation.
501: HTTP Header Status “Not Implemented”. The server does not support the facility and functionality mandatory to fulfill the request by client.
502: HTTP Header Status “Bad Gateway” The server, whiles the stage as a gateway or proxy, received an unacceptable response from the upstream server it right of entry in attempting to fulfill the request.
503: HTTP Header Status “Server overloaded” The server has been high and over loaded or servicing in progress.
504: HTTP Header Status “Gateway Timeout” The server waited for one more service that did not complete and entire in time.
505: HTTP Header Status “Not Supported” Requesting http protocol version does not support or refusing to support by the server.