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 phone book and finding the name. Things have grown more complicated now that cell phones are widely used and many people do not even have landlines, and if they do their number may be unpublished.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, some numbers may come up without an identifying name and there are ways for callers to stop their name from showing up. Reverse phone lookup providers have stepped up to these changing demands to offer a very valuable service to modern phone users.

There are two typical functions for these services.

Finding Names

If you are getting calls from someone and only a number shows on your ID, or you need to figure out cell phone callers, reverse phone lookup directories can assist in finding the name listed to the phone number in question. Just by typing in the number you will have access to whoever is initiating those phone calls in question.

People in search of such services include those wanting to check up on a number frequently calling their spouse or children's cell phone, since there is no phone book for cell phone numbers. Other people may use this when they need to identify a name connected to a landline that may be unlisted. Anytime you have a phone number but don't know who it is connected to, a reverse phone lookup service can deliver the information.

Finding Addresses

The other typical use is to find an address for someone, whether you know the name of the person or not. Once you plug into the information linked with a certain number most services will give other sorts of information as well, such as the address of an home phone or an address connected to a cell phone number.

This may not be a common need for most people, but it does have its uses in some situations. For example, take a parent desperate to find a teenager who has run away or is still out well past curfew. If they can get access to numbers from the teenager's belongings or cell phone a reverse phone lookup could quickly tell them addresses as well as names of locations the teenager may be at that time.

Other situations may be searching for addresses to send out party invitations to your child's friends. If you have a phone number you can access their address and mail out the invitation without calling and tracking down other busy parents.

Lookup directories can also give you a connection to other various types of data, such as income brackets or previous addresses, and one site even gives a map with an rough pinpoint to the business or home's location.

There will be a nominal price for any up to date reverse phone lookup directory, but if your business or personal situation requires certain data it is more than worth the payoff in the long run. The fee is unavoidable because this kind of information is not simple or free to research, pull together, and store, so issuing it as needed to people like you must also come with a charge to account for such serviceable costs.

There more than likely will never be a public directory for cell phone numbers, and even if there were most likely a lot of the numbers would be unlisted just like many home phone numbers right now. The only way to get access to such phone numbers is to put up a minor charge either to do a one time number search or to join a lookup service if you will be using the service long term.