ExtraDNS accelerates your Internet connection by caching DNS requests.Whenever you access a page on the world wide web, fetch your E-mail,request a file via FTP or access any other resource on the Internet, your computer will have to find out the IP number that corresponds to the address of the site you want to access. Each request needs to be sent to your DNS server across your Internet link. Depending on the speed of your connection, other line activity and DNS server load it may take several seconds before a reply is being received. It is but after this reply that your application can actually start loading the requested data. When a web page is being loaded, DNS requests need to be sent for each additional screen element that are part of the page (images, banners etc.) .