Many times you may have someone calling you and you have no idea who it is but you want to know, in this instance you can turn to a reverse phone lookup service. At one time these services were only available for landlines but now it is possible to also get information on cell phones as most of the population uses cell phones.

The reverse telephone directories allows you to locate anyone with a land line phone number. The question many people want to know is rather the same service applies to users of unlisted cell phone numbers. The good is news is yes, there is a service that can also locate a person with an unlisted phone number.