Not long ago, everyone had a landline phone in their home and finding a number or address simply required opening the white pages and locating the name. Things have grown 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now that cell phones are in common use and many people do not even have landlines, and if they do their number may be unpublished.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 widespread use 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 showing up. Reverse phone lookup providers have stepped up to these changing times to offer a very valuable service to modern phone users.

There are two common functions for lookup services.

Finding Names

If you are getting calls from someone and only a number is revealed on your caller ID, or you need to identify cellular phone callers, reverse phone lookup services can assist in finding the name registered to the phone number in question. Just by typing in the number you will be able to identify the person who is responsible for the calls of concern.

People needing lookup directories include those wanting to identify a number often phoning their spouse or children's cell phone, since there is no phone book for cell phone numbers. Others may use lookup directories when they need to know 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 service can assist you.

Locating 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 contact information associated with a specific phone number most services will deliver other sorts of information as well, such as the address of the home phone or the address associated with a cell phone number.

This may not be a typical need for some people, but it does have its uses in some situations. For instance, consider a parent desperate to locate a teenager who has run away or is still out well past curfew. If they can come up with numbers from the teenager's bedroom or cell phone a lookup directory could quickly tell them addresses and names of places the teenager may be at that time.

More common situations may be looking for addresses to mail out party invitations to your child's friends. If you have the phone number you can get their address and mail out the invitation without calling and tracking down other busy people.

Lookup directories can also deliver access to other kinds of data, like 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 legitimate reverse phone lookup directory, but if your business or personal situation requires certain information it is money well spent in the end. The fee is unavoidable because this variety of information is not easy or free to research, pull together, and protect, so issuing it immediately to others such as you must also include a fee to make up for such working expenditures.

There more than likely will never be a phone book for cell phone numbers, and even if there were it is probable many of the numbers would be unpublished as is the case with many home phone numbers right now. The only way to get access to these phone numbers is to give a small fee either to do a one time phone number search or to join a lookup directory if you will be using the service on a regular basis.