Not long ago, everyone had a standard phone in their home and locating a phone number or address was a matter of opening the yellow pages and locating their name. This has become more complicated now that cell phones are widely used and many people do not even have home phones, and if they do their number may be unpublished.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 development of caller ID on most landlines, some numbers may show up without an identifying name and there are ways for callers to prevent their details from showing up. Reverse phone lookup services have stepped up to these changing demands to offer a very useful service to modern phone users.

There are two typical functions for lookup directories.

Finding Names

If you are getting calls from someone and only a number shows on your caller ID, or you want to identify cell phone callers, reverse phone lookup services can help you find out the name listed to the number of concern. Just by entering the phone number you will be able to identify the person who is responsible for those bothersome phone calls.

People looking for lookup directories include those wanting to check up on a number constantly texting their spouse or teenager's cell phone, since there is no public directory for cell phone numbers. Other people may use this when they need to identify a name connected to a home phone that may be unpublished. Whenever you have a number but aren't sure who it belongs to, a reverse phone lookup directory can help.

Finding Addresses

The other common function is to identify an address for someone, whether you know the name of the person or not. Once you gain access to the information associated with a specific phone number most directories will deliver other sorts of data as well, which may include the address of an home phone or an address associated with a cell phone number.

This may not be a typical need for some people, but it does have its uses in quite a few situations. For instance, consider a parent desperate to find a teenager who has run off or has not returned home long after curfew. If they can get access to numbers from the teenager's bedroom or cell phone a reverse phone lookup could quickly uncover addresses as well as names of places the teenager may be located.

Other circumstances may be looking for addresses to mail out party invitations to your child's classmates. If you have a phone number you can find their address and mail out the invitation without calling or tracking down other busy family.

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

There is a small charge for any up to date reverse phone lookup service, but if your business or personal life requires certain information it is worth the money in the end. The charge is unavoidable because this sort of information is not easy or free to research, collect, and protect, so issuing it immediately to people like you must also come with a charge to account for these working 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 as is the case with many landline numbers today. The only way to obtain access to such numbers is to put up a minor fee 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.