HTTP Common Status Codes

200 -  Server successfully returned to the Web page 301 -  permanently moved, the requested page has been permanently moved to the new location 404 -  The requested page does not exist, the page does not exist. The 500 -  server encountered an error and could not complete the request. The 503 -  server is temporarily unavailable, and the server is currently unavailable (due to overloading or downtime maintenance). Usually, this is just a temporary state. The full list of  HTTP  status codes   1xx (temporary response) is used to represent a temporary response and require the requestor to perform an action to continue the status code.   Code   Description  100 (continue)   The requestor should continue to make the request. The return of this code by the server means that the server has received the first part of the request and is now waiting to receive the remainder. 101 (Switching protocol)   The requestor has asked the server to switch protocols, the server has confirmed and is ready to switch. 2XX (Success) is used to indicate that the server has successfully processed the request's status code.   Code   Description  200 (Success)   The server has successfully processed the request. Typically, this indicates that the server provided the requested Web page. If your server log log file is displayed for this status, this indicates that the request was successful. 201 (created)   The request was successful and the server has created a new resource. 202 (accepted)   The server has accepted the request, but it has not been processed. 203 (non-authorized information)   The server successfully processed the request, but returned information that might have been from another source. 204 (no content)   The server successfully processed the request, but no content was returned. 205 (reset content)   The server successfully processed the request, but did not return any content. Unlike the  204  response, this response requires the requestor to reset the document view (for example, to clear the form contents to enter new content). 206 (partial content)   Server successfully processed some  GET  requests. 3XX (redirected)   to complete the request, you need to proceed further. Typically, these status codes are always redirected: This code, like the 301  code that responds to  GET  and  HEAD  requests, automatically transfers the requestor to a different location. 303 (see other locations)   This code is returned by the server when a requester responds to a separate  GET  request in a different location to retrieve the response. For all except the  HEAD  requestRequest, the server will automatically go to a different location. 304 (unmodified)   The requested webpage has not been modified since the last request. When the server returns this response, the Web page content is not returned. If the page has not changed since the requestor last requested it, you should return this response (called the if-modified-since http  header). 305 (using proxies)   requesters can only use the proxy to access the requested Web page. If the server returns this response, the server also indicates which proxy the requestor should use. 307 (Temporary redirect)   The server is currently responding to requests from a Web page in a different location, but the requestor should continue to use the original location for future requests. This code, like the  301  code that responds to  GET  and  HEAD  requests, automatically transfers the requestor to a different location. However, since the   search engine will continue to crawl the original location and index it, you should not use this code to inform the search engine that a page or site has been moved. 4xx (Request error)   These status codes indicate that the request may have failed and that the server has been prevented from processing the request.   Code   Description 400 (Error request)   The server does not understand the syntax of the request. 401 (not authorized)   Request authentication required. After logging in, the server may return this response to the page. 403 (Disabled)   Server denied request. If this status code is displayed when a search engine attempts to crawl a valid webpage on your site, it may be that your server or host is denying access to the search engine. 404 (Not found)   The server could not find the requested webpage. For example, if the request is for a webpage that does not exist on the server, the server typically returns this code. 405 (method Disabled)   Disables the method specified in the request. 406 (not accepted)   cannot use the requested content attribute to respond to the requested Web page. 407 (required)   This status code is similar to  401 (unauthorized), but specifies that the requestor should use the proxy for authorization. If the server returns this response, the server also indicates which proxy the requestor should use. 408 (Request timed out)   Timeout when the server waits for a request. 409 (conflict)   The server has a conflict when it finishes the request. The server must contain information about the conflicts that occurred in the response. The server may return this code in response to a  PUT  request that conflicts with a previous request, and will provide a list of differences for two requests. 410 (Deleted)   If the requested resource has been permanently deleted, the server returns this response. This code is associated with &NThe bsp;404 (not found) code is similar, but sometimes replaces the  404  code in cases where resources have previously existed but are no longer present. If the resource has been permanently deleted, you should use the  301  code to specify a new location for the resource. 411 (valid length required)   The server does not accept requests that contain invalid content-Length header fields. 412 (no prerequisites)   The server does not meet one of the prerequisites set by the requestor in the request. 413 (Request entity too Large)   The server cannot process the request because the request entity is too large to exceed the processing power of the server. 414 (requested  URI )   requested  uri (usually URL) is too long for the server to process. 415 (Unsupported media type)   requested format is not supported by the requested page. 416 (Request scope does not meet the requirements)   If the request is made for an invalid range of pages, the server returns this status code. 417 (unmet expectations)   server does not meet 5xx (server error) These status codes indicate that the server has an internal error while trying to process the request. These errors may be the error of the server itself, not the request.   Code   Description  500 (server internal error)   The server encountered an error and could not complete the request. 501 (not implemented)   server does not have the ability to complete the request. For example, the server may return this code when the server does not recognize the request method. 502 (Bad Gateway)   Server as a gateway or proxy, received an invalid response from the upstream server. 503 (Service Unavailable)   currently cannot use the server (due to overloading or downtime maintenance). Usually, this is just a temporary state. 504 (Gateway Timeout)   Server as a gateway or proxy, not receiving requests from the upstream server in a timely manner. 505 (http  version not supported)   server does not support the version of  HTTP  protocol used in the request.

HTTP Common Status Codes