With a massive list of numbers in North America... the potential number of sequences is endless So, if you've been trying to find a certain number beginning with a 479-639 area code exchange, you can. With the assistance of reverselookupphonedirectory.com, all you have to do to find information on anyone with a 479-639 is enter the full nine digit numberr into the given search field. That is all you need to begin your research. The days of trying to find background information from several sources are gone.