Type the full telephone number including the area code into the search field of a free reverse phone lookup website, and hit the Search button. Some of the most popular free reverse phone lookup websites are WhitePages.com, AnyWho.com and Addresses.com. The search results should feature the desired information about the phone number on which you performed a reverse lookup. If the number you are searching for is local, another option is to use a local printed reverse phone directory.
Free reverse phone number lookups work for most business and residential landline telephone numbers, but there are exceptions. Unlisted and fax numbers are not included in most online phone number databases or printed reverse phone directories, and thus are usually impossible to find via reverse lookups.
Free reverse phone lookup websites usually do not provide results for cellphone number reverse searches. Cellphone numbers are provided by various independent service providers rather than an interlocking grid of landline service providers. This makes them difficult to catalogue and turn into online databases, leading most companies that provide reverse cellphone number lookup services to charge a fee. For this reason, it is usually impossible to perform a free reverse lookup on a cellphone number.