D&B Million Dollar Database (Online) also available from home with a valid BPL card.
Information provided for more than 14 million U.S. companies. Offers up to 35 searchable fields such as SIC and NAICS codes, company size and sales, business type and age, and contact criteria. Includes specialty information such as executive name lists and president biographies.
There are many telephone directories available for free online as well.
Search for names, addresses, and phone numbers of over 16 million businesses across the U.S. in this “Yellow Page” database. This site can also find phone numbers and e-mail addresses of individuals.
White page & yellow page searching for individuals and businesses. Includes a company fax number directory.
Online telephone directory of over 90 million individuals and over 10 million businesses (search by name or business category).