The cell phone numbers are quite different from the land line ones. The difference between them also exists when it comes to searching information about the owner of the numbers. If you get an unknown call from a landline then there are several simple ways through which you can identify the caller. But, if the call comes from a mobile phone then it can be really tough to find out the information regarding the owner of the mobile number. Apart from this, there are several cell phone numbers which are private and unlisted. This may further make the situation worse.The reverse mobile phone service providers differ as they help you find information not only for the land line numbers but also the cell phone numbers. These companies differ as they mainly concentrate on the private numbers and the mobile phone numbers. There are many different types of lookup companies in the Internet. Some of the companies provide access to the public records whereas there are others which give you access to the protected records at a small fee.These services are mostly used by the people who wish to identify the unknown numbers that they see in their phone bills. It also comes in handy when you need to find out about the prankster who has been making threatening calls to your home. If you join or subscribe for the paid services through a genuine website then you will get the access to the database and you can make unlimited searches.There are many people who do not use the services because they do not know how to use them. It is important that you subscribe for a website that is easy to navigate and use. In order to use the services of the online cell phone directory, you will have to enter the ten digit number and click on the search button. You will thus get the instant results about the cell phone number requested. It will provide you all the information that could be derived from the database, regarding that particular number.There are many people, who opt for the free services to get information about the numbers, but these services are limited and the biggest difference is that they provide information only about the land line numbers. To get accurate information about the cell phone numbers you must use a paid reverse search directory. It is the most recommended and reliable source to get information about those who use the private numbers or cell phones.