It used to be that everyone had a landline phone in their home and finding a phone number or address simply required opening the white pages and finding 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now that cell phones are in common use and many people do not even have landlines, and if they do their number may be unpublished.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 invention of caller ID on most landlines, many numbers may show up without an identifying name and there are ways for callers to prevent their name from appearing. Reverse phone lookup providers have stepped up to these changing times to offer a very valuable service to resourceful phone users.

There are two common functions for these directories.

Locating Names

If you are getting calls from someone and only a number shows on your ID, or you need to identify cellular phone callers, reverse phone lookup directories can help you find out the name listed to the phone number of concern. Just by entering the number you will be able to identify the person who is initiating the phone calls in question.

People looking for such services include those wanting to check up on a number constantly phoning their spouse or teenager's cell phone, since there is no phone book for cell phone numbers. Others may use this when they need to identify a name registered to a home phone that is unlisted. If you have a number but don't know who it is connected to, a reverse phone lookup directory can assist you.

Searching for Addresses

another common use is to identify an address for someone, whether you know the name of the person or not. Once you find the information connected with a particular phone number most directories will deliver other sorts of information as well, which includes the address of the landline or the address listed to a cell phone number.

This may not be an everyday need for most people, but it does have its uses in some situations. For example, take a parent needing to locate a teenager who has run away or is still out long after curfew. If they can find phone numbers from the teenager's belongings or cell phone a reverse phone lookup could quickly reveal addresses and names of locations the teenager may be located.

More common situations may be looking for addresses to send out party invitations to your child's friends. If you have their phone number you can find their address and easily deliver the invite without calling or tracking down other busy family.

Lookup directories can also deliver a connection to other sorts of data, such as income brackets or address histories, and one site even gives a map with an rough pinpoint of the most current location.

There is a small charge for any up to date reverse phone lookup directory, but if your business or personal life requires accurate data it is money well spent in the end. The charge is required because this variety of information is not simple or completely free to research, compile, and protect, so dispensing it immediately to people such as you must also come with a charge to make up for these operational costs.

There likely will never be a phone book for cell phone numbers, and even if there were most likely many of the numbers would be unpublished just like many home phone numbers right now. The best way to obtain access to such numbers is to give a nominal fee either to do a single phone number lookup or to join a lookup service if you will be using the service on a regular basis.