What is OpenDNS Premium DNS and How Does it Compare to Google Public DNS
Think of recursive DNS as the Internet’s switchboard operator and authoritative DNS as a pile of phone books. By default, each ISP provides recursive DNS because without it the Internet would not work. There are a few better alternatives, such as OpenDNS Premium DNS and Google Public DNS. Google neither shows what’s happening on your networks nor offers an option to protect your networks and devices against known or emergent threats.