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Our
listings come directly from a Data File that contains current
compiled telephone directory data from the white, yellow, and
professional sections of over 4,500 US phone directories. The Data
File is regularly processed through a national disconnect service to
remove working numbers that are no longer active. The data has been
cleansed using USPS standardization; NCOA processing, area code
correction, and Geographical Data Technology (GDT), latitude and
longitude coordinates are also applied to help identify the location
of the business. The Data File is regularly updated to include
Regional Bell Operating Company (RBOC) listings that are public, but
not yet published.
The Data File’s business data is compiled from both white and yellow
page listings from the telephone directories. This provides you with
the most comprehensive representation of businesses in the US. White
page compilation makes it possible to identify the approximately 20%
of US businesses that do not advertise in the yellow pages. The
business data also contains caption/department information from the
white pages. Additional information in the business data include
yellow page headings based upon SIC Code, type of ad that appears in
the yellow pages, the size of the ad in the yellow pages, whether a
business gives free estimates, appointments or consultation, the
hours and times a particular business is open, and foreign listings.
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