Not long ago, everyone had a landline phone in their home and finding a phone number or address was a matter of opening the phone book and finding the name. This has become 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now that cell phones are widely used and many people do not even have landlines, and if they do their number may be unpublished.

Even with the widespread use of caller ID on most home phones, many numbers may show up without an identifying name and there are ways for callers to prevent their name from appearing. Reverse phone lookup directories have responded to these changing times to offer a very timely service to resourceful phone users.

There are two typical functions for these services.

Locating Names

If you are getting calls from someone and only a number comes up on your ID, or you want to figure out cellular phone callers, reverse phone lookup services can assist in finding the name registered to the phone number in question. Just by entering the number you will have access to whoever is behind those phone calls in question.

People looking for such services include those who need to identify a number constantly calling their spouse or children's cell phone, since there is no public directory for cell phone numbers. Others may use lookup directories when they need to know a name listed to a landline that may be unlisted. If you have a number but are uncertain who it is connected to, a reverse phone lookup website can deliver the information.

Locating Addresses

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

This may not be a common need for some people, but it does have its benefits in some situations. For example, take a parent desperate to locate a teenager who has run away or is still out well past curfew. If they can find phone numbers from the teenager's belongings or cell phone a lookup directory could quickly reveal addresses and names of locations the child may be at that time.

More common circumstances may be searching for addresses to send out party invitations to your child's friends. 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 parents.

Lookup websites can also deliver access to other various types 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 relevant reverse phone lookup directory, but if your business or personal life demands particular data it is money well spent in the end. The fee is required because this kind of information is not easy or completely free to research, pull together, and save, so dispensing it as needed to consumers such as you must also come with a fee to cover such serviceable costs.

There likely will never be a phone book for cell phone numbers, and even if they were compiled it is probable a lot of the numbers would be unpublished just like many landline numbers right now. The only way to obtain access to these phone numbers is to give a nominal charge either to do a single number search or to join a lookup service if you will need to access the directory on a regular basis.