It used to be that everyone had a landline phone in their home and locating a phone number or address simply required opening the yellow pages and finding their name. It is often more complex now that cell phones are widely used and many people do not even have home phones, and if they do their number may be unpublished.

Even with the widespread use of caller ID on most landlines, many numbers may come up without an identifying name and there are ways for callers to block their name from showing up. Reverse phone lookup providers have responded to these changing demands to provide a very useful service to resourceful phone users.

There are two common uses for these directories.

Searching for Names

If you are receiving calls from someone and only a number is revealed on your caller ID, or you want to identify cellular phone callers, reverse phone lookup directories can help you find out the name listed to the phone number in question. Just by typing in the phone number you will have access to the person who is initiating the calls of concern.

People looking for such services include those who need to identify a number often calling their spouse or teenager's cell phone, since there is no accessible directory for cell phone numbers. Other people may use this when they want to know a name listed to a home phone that may be unpublished. Anytime you have a number but aren't sure who it belongs to, a reverse phone lookup service can help.

Locating Addresses

The other typical function is to locate an address for someone, whether you know their name or not. Once you gain access to the information connected with a certain number most services will deliver other sorts of information as well, which includes the address of an home phone or an address listed to a cell phone number.

This may not be a typical need for most people, but it does have its benefits in quite a few situations. For instance, consider a parent in a rush to track down a teenager who has run off or is still out long after curfew. If they can find phone 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.

Other situations may be looking for addresses to send out party invitations to your child's classmates. If you have their phone number you can get their address and get the invite in the mail without calling and tracking down other busy parents.

Lookup directories can also deliver access to other sorts of information, including income brackets and address histories, and one site even gives a map with an general pinpoint to the business or home's location.

There will be a nominal price for any up to date reverse phone lookup service, but if your business or personal life requires particular data it is worth the money in the long run. The charge is unavoidable because this variety of information is not simple or free to research, compile, and protect, so dispensing it immediately to people like you must also include a fee to account for these operational costs.

There more than likely will never be a phone book for cell phone numbers, and even if there were most likely many of the numbers would be unlisted as is the case with many home phone numbers today. The only way to obtain access to these numbers is to pay a minor charge either to do a one time number lookup or to join a lookup directory if you will need to access the directory on a regular basis.