Not long ago, everyone had a standard phone in their home and searching for a phone number or address was a matter of opening the white pages and searching for their name. It is often more complex now that cell phones are in common use and many people do not even have landlines, and if they do their number may be unpublished.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, a lot of numbers may show up without an identifying name and there are ways for callers to stop their details from appearing. Reverse phone lookup directories have stepped up to these changing demands to offer a very useful service to modern phone users.

There are two common functions for these directories.

Locating Names

If you are getting calls from someone and only a number is revealed on your ID, or you need to identify cell phone callers, reverse phone lookup directories can help you find out the name registered to the number in question. Just by entering the number you will be able to identify the person who is behind the bothersome phone calls.

People in search of lookup directories include those wanting to check up on a number often 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 find a name listed to a home phone that is unlisted. If you have a phone number but are uncertain who it belongs to, a reverse phone lookup service can help.

Searching for Addresses

The other typical purpose is to find an address for someone, whether you know the name of the person or not. Once you plug into the information connected with a particular phone number most directories will give other sorts of data as well, which includes the address of an landline or an address listed to a cell phone number.

This may not be a common need for some people, but it does have its benefits in quite a few situations. For instance, consider a parent in a rush to find a teenager who has run away or is still out long after curfew. If they can get access to numbers from the teenager's bedroom or cell phone a lookup directory could quickly uncover addresses as well as names of locations the child may be at that time.

More common circumstances may be searching for addresses to send out party invitations to your child's classmates. 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 parents.

These services can also give you access to other kinds of information, like income brackets or address histories, and one site even gives a map with an general pinpoint of the most current location.

There will be a small charge for any up to date reverse phone lookup directory, but if your business or personal situation requires accurate data it is worth the money in the end. The fee is necessary because this sort of information is not simple or completely free to research, collect, and protect, so distributing it immediately to others such as you must also come with a fee to account for these working costs.

There more than likely will never be a public directory for cell phone numbers, and even if there were most likely many of the numbers would be unlisted just like many landline numbers today. The only way to obtain access to these numbers is to put up a small fee either to complete a one time number lookup or to join a lookup directory if you will be using the directory on a regular basis.