One of the most common questions people have is whether or not a reverse cell phone lookup directory actually exists out there somewhere on the Internet. After all, there are plenty of free reverse lookup sites for land line numbers. What's the difference? 

The difference is the classification of the information.  Your residential phone number is considered public domain information and has been for decades. That's why no one has to ask your permission to publish your number in the telephone book.  In fact, sometimes you have to pay a fee to keep your name out of those phone directories, i.e., to get it unlisted or non-published. 

Cellphone numbers are generally more private, since you're charged for every call you receive.  That's why cell phone numbers are typically harder to track down and they are not collected in a central database.  Putting such a database together requires extensive time and money and that’s why such services – if they are legitimate – usually charge a fee to use them. 

So, to do a cell phone number look up, you'll need to go to a specialized online directory site that provides such a service. 

One of the top rated directories - Reverse Phone Detective - has the biggest and most up to date database. It provides instant results on the phone owner information, address, history, mobile carrier, connection status, and more. Their exclusive database includes broad coverage of the entire United States – with better results than you’ll find at most other sites. You will also get free search assistance and access to expanded people search databases. 

Basically, journalists, investigators, attorneys, legal professionals, and bounty hunters - all use cell phone number look up services to aid in their business. These days spouses are using the reverse directories to find out if their partners are cheating on them. And parents can check as to where their son or daughter has been calling to find out if their child is falling in with a bad company.