​Dun & Bradstreet maintains a database of over 240 million companies globally and over 100 million professional contact names using a variety of sources including public records, trade references, telco providers, telephone interviews, print, digital and trade publications, among others. The company derives revenues through subscriptions as well as pay-per-business report, and to a smaller extent, third-party licensing agreements.

To obtain a D&B number, refer to their website at www.dandb.com.