It used to be that everyone had a landline phone in their home and finding a phone number or address simply required opening the white pages and finding the name. Things have grown more difficult now that cell phones are widely used and many people do not even have home phones, and if they do their number may be unlisted.

Even with the widespread use of caller ID on most landlines, some numbers may come up without an identifying name and there are ways for callers to prevent their details from coming up. Reverse phone lookup providers have responded to these changing demands to offer a very timely service to modern phone users.

There are two typical functions for these directories.

Finding Names

If you are getting calls from someone and only a number is revealed on your ID, or you want to figure out cellular phone callers, reverse phone lookup directories can assist in finding the name registered to the phone number in question. Just by entering the number you will have access to the person who is responsible for those phone calls in question.

People looking for lookup directories include those who need to check up on a number often texting their spouse or teenager's cell phone, since there is no public directory for cell phone numbers. Others may use this when they want to know a name listed to a landline that is unlisted. If you have a phone number but aren't sure who it belongs to, a reverse phone lookup directory can assist you.

Locating Addresses

The other common use is to locate an address for someone, whether you know their name or not. Once you find the information associated with a particular number most services will give additional information as well, which may include the address of an home phone or an address listed to a cell phone number.

This may not be an everyday need for some people, but it does have its benefits in some situations. Such as a parent desperate to track down a teenager who has run away or has not returned home well past curfew. If they can find phone numbers from the teenager's bedroom or cell phone a reverse phone lookup could quickly uncover addresses as well as names of places the child may be at that time.

More common circumstances may be looking for addresses to send out party invitations to your child's peers. If you have the phone number you can access their address and easily deliver the invite without calling or tracking down other busy family.

These services can also give you a connection to other kinds of information, such as income brackets and address histories, and one site even gives a map with an estimated pinpoint of the most current location.

There is a small charge for any relevant reverse phone lookup directory, but if your business or personal situation demands accurate data it is worth the money in the end. The fee is necessary because this kind of information is not simple or free to research, pull together, and protect, so issuing it on demand to people such as you must also collect a fee to make up for these working costs.

There 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 just like many home phone numbers right now. The only way to gain access to such phone numbers is to pay a small charge either to do a one time phone number search or to join a lookup service if you will need to access the service on a regular basis.