It used to be that everyone had a landline phone in their home and locating a number or address was a matter of opening the white pages and locating their name. This has become more difficult now that cell phones are in common use and many people do not even have landlines, and if they do their number may be unpublished.
Even with the widespread use of caller ID on most landlines, a lot of numbers may show up without an identifying name and there are ways for callers to stop their name from showing up. Reverse phone lookup providers have responded to these changing demands to offer a very valuable service to modern phone users.
There are two common uses for these directories.
Finding Names
If you are getting calls from someone and only a number is revealed on your caller ID, or you want to figure out cellular phone callers, reverse phone lookup directories can assist in finding the name registered to the phone number of concern. Just by typing in the phone number you will be able to identify whoever is behind the phone calls in question.
People in search of such services include those wanting to check up on a number frequently texting their spouse or teenager's cell phone, since there is no phone book for cell phone numbers. Other people may use lookup directories when they need to find a name listed to a home phone that may be unpublished. Anytime you have a phone number but aren't sure who it belongs to, a reverse phone lookup directory can assist you.
Locating Addresses
The other typical purpose is to find an address for someone, whether you know the name of the person or not. Once you gain access to the information associated with a certain phone number most directories will deliver additional data as well, which includes the address of an landline or the address associated with a cell phone number.
This may not be a common need for most people, but it does have its uses in quite a few situations. For example, take a parent needing to find a teenager who has run away or has not returned home long after curfew. If they can find phone numbers from the teenager's bedroom or cell phone a reverse phone lookup could quickly tell them addresses as well as names of places the teenager may be at that time.
More common circumstances may be searching for addresses to send out party invitations to your child's peers. If you have their phone number you can access their address and mail out the invitation without calling and tracking down other busy parents.
These services can also deliver a connection to other various types of data, such as income brackets and previous addresses, and one site even gives a map with an estimated pinpoint to the business or home's location.
There is a minor fee for any legitimate reverse phone lookup directory, but if your business or personal situation requires certain information it is money well spent in the long run. The charge is unavoidable because this sort of information is not easy or free to research, collect, and store, so dispensing it as needed to people such as you must also collect a fee to make up for such serviceable costs.
There more than likely will never be a phone book for cell phone numbers, and even if they were compiled most likely a lot of the numbers would be unlisted just like many home phone numbers today. The only way to obtain access to such phone numbers is to put up a small charge either to do a one time phone number search or to join a lookup directory if you will be using the directory on a regular basis.