Infospace.com is a website that is used to find the contact of a person who has given anonymous calls to your number. In this website the search is categorized for both business and resident category. This simplifies the search even better and easy. The site also offers other kinds of Reverse Lookup like Address Lookup, Area Code lookup, International Dialing Codes Lookup, Reverse Phone Lookup etc. Might be the purpose of the searches vary, but all these serve a common simple mechanism. Reverse Lookup DB is something where in you can search for the information pertaining to the database contents but you have to enter the detail in the respective field of search for appropriate results. In this manner the search time is also reduced along with the similar results provided. Thus Reverse Lookup is used in Reverse Phone Lookup and Reverse Lookup DB. This mechanism will become advanced in the mere future.