Online Reverse Phone Book A reverse phone book facility is very easily available online
. There are several service providers who offer online reverse phone book services. You can find that most of these services are free of cost though there are a few companies who ask for a nominal user fee per year for usage (we'll discuss this later on). Those who receive prank calls frequently will find this as the best option to detect the ones who are causing trouble to you and keeping you awake at all hours of the night. Even if you are just in need of details of a person whose phone number is all you have, online reverse phone book will give you best result by getting you the exact information you want. Most of the free service providers are giving details about land line phones. This is because land line details are easy to collect. But there are not many service providers who give details of cell phone numbers. Collecting cell phone numbers is comparatively a difficult task and requires manual labor and/or the acquisition of large phone databases (very expensive, hence the fees). It is also not possible to collect all the cell phone numbers as people might be using more than one cell phone number. The users are so vast that you might find it difficult to gather all the numbers and is easy to miss some in the effort. Thus online reverse phone book services are more useful in gathering information on cell phone users. But some of the paid sites offer better results in online reverse phone book search by providing cell phone number users details also. When you are in search of details of a cell number it is better to depend on paid sites and not free site. What you have to pay is only a nominal amount for yearly usage of online reverse phone books--this can actually wind up saving you money in the long run since the average user makes 5-10 reverse phone searches annually.