This article says the US Government Accountability Office (GAO) “yesterday released a report regarding false contact information for registered domain names (The report applies only to .com, .net and .org top-level domains.). The GAO report estimates that 2.31m domain names,representing 5.14 per cent of the world wide web,are registered with ‘patently false’ contact infromation”.

Over 2m websites registered with false data,says report