It used to be that everyone had a standard phone in their home and searching for a number or address simply required opening the phone book and finding their name. Things have grown more complex now that cell phones are in common use and many people do not even have home phones, and if they do their number may be unpublished.

Even with the development of caller ID on most home phones, many numbers may appear without an identifying name and there are ways for callers to prevent their name from coming up. Reverse phone lookup services have stepped up to these changing times to offer a very timely service to modern phone users.

There are two common functions for these directories.

Locating Names

If you are receiving calls from someone and only a number shows on your caller ID, or you want to figure out cellular phone callers, reverse phone lookup directories can help you find out the name listed to the phone number in question. Just by entering the number you will have access to the person who is responsible for the bothersome phone calls.

People needing such services include those who need to check up on a number constantly calling their spouse or teenager's cell phone, since there is no accessible directory for cell phone numbers. Others may use lookup directories when they need to identify a name registered to a home phone that may be unlisted. If you have a number but don't know who it is connected to, a reverse phone lookup directory can assist you.

Finding Addresses

another common 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 additional data as well, which may include the address of the landline or the address listed to a cell phone number.

This may not be a common need for most people, but it does have its benefits in some situations. Such as a parent desperate to locate a teenager who has run away or has not returned home long after curfew. If they can get access to numbers from the teenager's belongings or cell phone a reverse phone lookup could quickly uncover addresses as well as names of locations the child may be at that time.

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

These services can also give you a connection to other various types of information, like income brackets or previous addresses, and one site even gives a map with an general pinpoint of the most current location.

There is a nominal price for any legitimate reverse phone lookup directory, but if your business or personal situation requires particular information it is money well spent in the end. The charge is unavoidable because this variety of information is not simple or free to research, compile, and protect, so distributing it on demand to others such as you must also include a charge to account for these operational costs.

There more than likely will never be a public directory for cell phone numbers, and even if they were compiled it is probable the majority of the numbers would be unpublished as is the case with many home phone numbers today. The only way to get access to such phone numbers is to give a minor charge either to do a one time number lookup or to join a lookup service if you will need to access the directory long term.