A 305 status code tells the client that the requested resource has to be reached through a proxy, which will be specified in the response.

The HTTP status code 305 Use Proxy occurs when your Web server thinks that your URL should be redirected to another URL - the 'proxy'. This is very often related to security considerations governing access to URL resources.

The requested resource MUST be accessed through the proxy given by the Location field. The Location field gives the URI of the proxy. The recipient is expected to repeat this single request via the proxy. 305 responses MUST only be generated by origin servers. If you monitor your website through 100 pulse, we will intimate you through mail or short message service whenever you encounter 305 status code.