Queries the http://www.hostip.info/ api to get the country / state information based on the user's ip or specific ip passed to it.
By default, it shows the Country/State information on the user profile page. You can show / hide this information thorugh the setting from Admin->Configuration->Hostip Settings page.
It saves the Country/State information in session variable, hostip_data, to improve the performance. This way call will be made once for a given user.