Reverse Phone Lookup : Reverse Phone Lookup is a service which lets you trace any phone number anonymously online.It is an Online search service that helps people to search for the owner details of any phone number, be it a cell phone number or land line phone number or an unlisted phone number. You can get search results in a matter of seconds.Te search results may include the name of the owner of the phone number,his current address,his criminal background etc.It gives you complete control on the search you make.Reverse Phone Lookup is not free i.e. it charges a small amount of money for their service but it is a great service altogether.