Not long ago, everyone had a landline phone in their home and finding a phone number or address simply required opening the yellow pages and finding their name. Things have grown 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 unlisted.

Even with the development of caller ID on most home phones, a lot of numbers may appear without an identifying name and there are ways for callers to block their name from coming up. Reverse phone lookup providers have stepped up to these changing demands to offer a very valuable service to resourceful phone users.

There are two common functions for lookup directories.

Finding Names

If you are getting calls from someone and only a number comes up on your caller ID, or you want to figure out cell phone callers, reverse phone lookup services can help you find out the name listed to the phone number in question. Just by entering the number you will be able to identify the person who is responsible for those calls of concern.

People in search of lookup directories include those who need to check up on a number constantly texting their spouse or teenager's cell phone, since there is no accessible directory for cell phone numbers. Others may use this when they want to find a name connected to a home phone that may be unlisted. If you have a number but don't know who it belongs to, a reverse phone lookup website can assist you.

Searching for Addresses

The other typical function is to locate an address for someone, whether you know the name of the person or not. Once you plug into the information linked with a specific phone number most directories will deliver additional data as well, such as the address of the home phone or the 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. Such as a parent in a rush to locate a teenager who has run off or is still out well past curfew. If they can get access to numbers from the teenager's bedroom or cell phone a reverse phone lookup could quickly tell them addresses and names of locations the teenager may be located.

Other circumstances may be looking for addresses to mail out party invitations to your child's peers. If you have the phone number you can access their address and mail out the invitation without calling and tracking down other busy people.

Lookup directories can also give you a connection to other sorts of information, like income brackets and address histories, and one site even gives a map with an estimated pinpoint of where the home or business is located.

There is a small charge for any legitimate reverse phone lookup directory, but if your business or personal life requires particular information it is worth the money in the long run. The fee is required because this kind of information is not easy or free to research, pull together, and save, so issuing it immediately to people like you must also collect a fee to make up for these working costs.

There more than likely will never be a public directory for cellular numbers, and even if there were it is probable many of the numbers would be unlisted as is the case with many home phone numbers right now. The best way to gain access to such numbers is to put up a minor fee either to do a one time number lookup or to join a lookup directory if you will need to access the service on a regular basis.