It used to be that everyone had a standard phone in their home and searching for a phone number or address simply required opening the yellow pages and searching for their name. Things have grown more difficult now that cell phones are widely used and many people do not even have home phones, and if they do their number may be unpublished.

Even with the widespread use of caller ID on most landlines, many numbers may appear without an identifying name and there are ways for callers to prevent their details from showing up. Reverse phone lookup services have responded to these changing demands to provide a very valuable service to modern phone users.

There are two typical uses for these directories.

Finding Names

If you are getting calls from someone and only a number shows on your caller ID, or you need to figure out cell phone callers, reverse phone lookup directories can assist in finding the name registered to the number in question. Just by typing in the phone number you will be able to identify whoever is behind the bothersome phone calls.

People in search of lookup directories include those wanting to identify a number constantly phoning their spouse or children's cell phone, since there is no public directory for cell phone numbers. Other people may use lookup directories when they need to identify a name registered to a landline that is unpublished. Whenever you have a number but don't know who it belongs to, a reverse phone lookup service can help.

Finding Addresses

The other common function is to identify an address for someone, whether you know the name of the person or not. Once you gain access to the contact information associated with a particular number most directories will give other sorts of information as well, which may include the address of the landline or an address connected to a cell phone number.

This may not be a typical need for some people, but it does have its uses in quite a few situations. For example, take a parent desperate to track down a teenager who has run away or is still out well past 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 located.

More common circumstances may be searching for addresses to send out party invitations to your child's peers. If you have a phone number you can access their address and get the invite in the mail without calling or tracking down other busy family.

Lookup directories can also give you a connection to other sorts of data, such as income brackets and previous addresses, and one site even gives a map with an general pinpoint of where the home or business is located.

There is a minor fee for any relevant reverse phone lookup service, but if your business or personal situation demands particular information it is more than worth the payoff in the long run. The charge is necessary because this variety of information is not easy or free to research, compile, and store, so dispensing it immediately to people like you must also include a charge to cover these working costs.

There probably will never be a phone book for cellular numbers, and even if there were it is probable the majority of the numbers would be unpublished just like many home phone numbers right now. The only way to get access to these numbers is to give a nominal charge either to do a single number search or to join a lookup service if you will need to access the service on a regular basis.