 Essentially, OpenDNS has gathered a large database from various anti-phishing and anti-botnet organizations as well as its own data to compile a list of known website spoofing offenders.When a user attempts to access one of these bad websites, they are blocked at the DNS level.APWG statistics show that most phishing attacks use URLs, not domain names, so there would be a large amount of website spoofing that OpenDNS would be unable to track.