reverse look up
Finding information behind a telephone number can be as quick and easy as a simple internet search, or it can become a long, drawn out and painful process that seems to have no end and produce no useable results. The outcome often depends on who owns the telephone number and what kind of number it is.
Finding the individual who has a traditional landline number is generally pretty easy. Most landlines are listed in telephone directories unless the owner doesn't want the number listed. Cell phone numbers are usually the exception and a reverse look up doesn't easily produce results. Cell phone numbers are not listed in free telephone directories like land lines traditionally are, and information has to be found other ways.
Some companies sell reverse look up service for cell phone numbers and search publicly available records, such as county records. They also may have purchased access to special cell phone databases and can provide results through these. Either way, cell phone numbers are generally the hardest to find information on, and often the information is only available for a fee.
Bloggers speaking about the reverse look up can be found at sites like lookphonereverse and reversephonequery.
by 
