Reverse Phone Number Search Online – Email and Address

The Highest Quality for the Highest Response

When you invest valuable time and money on mailings or sales calls, you need the most accurate data available. That's why it's important to choose Polk City Directories, a division of infoUSA, the largest database company. Our 600 full-time researchers are solely dedicated to building the data, verifying it and updating it for you.

Our Database & Technology Center in
Papillion, Nebraska

How we compile our data:

  Each day, we scour thousands of sources to add new data, update
  existing records and eliminate duplicates. Our process is like no
  other in the industry. In fact, we do something no other company
  does – we make over 20 million phone calls each year to verify the
  information.

Our consumer information:

  We scrutinize and catalog 4,300 telephone directories.
  Data specialists examine each listing and enhance it with buying habit
  and lifestyle information from real estate transactions, product
  registrations, magazine subscriptions, and survey responses.
  Every month, we match and clean the data with the USPS National
  Change of Address (NCOA), ZIP+4 and Delivery Sequence File to
  standardize and keep the addresses accurate.

Our business information:

  We scrutinize and catalog 5,200 phone books, annual reports and other
  business directories to find information on nearly every business in the
  nation.
  We hand-key each record and call every business to make sure you have
  the most reliable information available.
  Next, we add public record data from county courthouse filings, SEC and
  10k filing, and Secretary of State data.
  Every month, we match and clean the data with the USPS National
  Change of Address (NCOA), ZIP+4 and Delivery Sequence File to
  standardize and keep the addresses accurate.