Not long ago, everyone had a standard phone in their home and locating a number or address was a matter of opening the phone book and finding the name. It is often more difficult now that cell phones are in common use and many people do not even have home phones, and if they do their number may be unpublished.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 invention of caller ID on most landlines, many numbers may come up without an identifying name and there are ways for callers to block their details from appearing. Reverse phone lookup services have responded to these changing demands to provide a very valuable service to resourceful phone users.

There are two typical functions for these directories.

Locating Names

If you are receiving calls from someone and only a number comes up on your caller ID, or you want to figure out cell phone callers, reverse phone lookup directories can assist in finding the name listed to the number in question. Just by entering the number you will be able to identify whoever is responsible for the phone calls in question.

People in search of lookup directories include those wanting to check up on a number constantly phoning their spouse or children's cell phone, since there is no accessible directory for cell phone numbers. Other people may use this when they need to know a name connected to a home phone that may be unpublished. Whenever you have a phone number but don't know who it is connected to, a reverse phone lookup service can help.

Finding Addresses

another typical use is to locate an address for someone, whether you know their name or not. Once you find the information linked with a certain phone number most services will give additional data as well, such as the address of an landline or the address listed to a cell phone number.

This may not be a typical 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 belongings or cell phone a lookup directory could quickly uncover addresses as well as names of places the teenager may be located.

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

These services can also give you access to other various types of data, including income brackets or address histories, and one site even gives a map with an rough pinpoint of the most current location.

There will be a minor fee for any legitimate reverse phone lookup service, but if your business or personal situation demands particular data it is worth the money in the end. The charge is unavoidable because this variety of information is not simple or completely free to research, compile, and protect, so dispensing it on demand to others such as you must also include a charge to account for such working costs.

There likely will never be a public directory for cellular numbers, and even if they were compiled it is probable a lot of the numbers would be unpublished as is the case with many landline numbers today. The only way to get access to these numbers is to pay a minor charge either to complete a single number search or to join a lookup service if you will be using the directory on a regular basis.