With a wide range of numbers nationwide... the potential number of sequences is limitless So, if you have been looking for a certain phone number that starts with a 520-642 area code exchange, you are now able to. With the help of reverselookupphonedirectory.com, all you are required to do to get information on anyone with a 520-642 is type in their entire nine digit phone numberr into the provided search box. That is all you need to get started on your search. The days of scouring for background information from multiple sources are gone.