It used to be that everyone had a landline phone in their home and finding a number or address simply required opening the phone book and searching for their name. It is often more complicated now that cell phones are widely used 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, many numbers may show up without an identifying name and there are ways for callers to block their name from appearing. Reverse phone lookup services have responded to these changing times to offer a very valuable service to resourceful phone users.

There are two common uses for these directories.

Locating Names

If you are receiving calls from someone and only a number is revealed on your ID, or you want to identify cell phone callers, reverse phone lookup services can assist in finding the name registered to the number of concern. Just by entering the phone number you will be able to identify whoever is initiating the bothersome phone calls.

People needing lookup directories include those wanting to identify a number often phoning their spouse or teenager's cell phone, since there is no phone book for cell phone numbers. Other people may use lookup directories when they need to find a name connected to a home phone that may be unlisted. If you have a phone number but aren't sure who it is connected to, a reverse phone lookup directory can deliver the information.

Locating Addresses

The other typical use is to find an address for someone, whether you know their name or not. Once you plug into the contact information associated with a certain phone number most services will deliver other sorts of data as well, which includes the address of an home phone or an address listed to a cell phone number.

This may not be a common need for most people, but it does have its uses in quite a few situations. For instance, consider a parent desperate to find a teenager who has run away or has not returned home long after 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 locations the teenager may be at that time.

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

These services can also deliver a connection to other various types of information, including income brackets and previous addresses, and one site even gives a map with an estimated 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 demands certain information it is worth the money in the long run. The charge is required because this sort of information is not simple or completely free to research, pull together, and protect, so distributing it on demand to others such as you must also collect a charge to cover such operational expenditures.

There more than likely will never be a phone book for cellular numbers, and even if they were compiled it is probable a lot of the numbers would be unpublished just like many landline numbers today. The only way to obtain access to these phone numbers is to put up a nominal fee either to do a one time phone number search or to join a lookup service if you will need to access the directory long term.