With a massive list of phone numbers around the country... the possible number of combonations is unmeasurable So, if you have been looking for a specific telephone number with a 520-630 area code exchange, you are now able to. With the help of reverselookupphonedirectory.com, all you have to do to find information on a person with a 520-630 is insert the entire nine digit telephone numberr into the available search box. that's all you need to begin your search. The days of scouring for background information from different sources are done.