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D-U-N-S Number

The D-U-N-S Number is a non-indicative nine-digit number assigned and maintained by Dun & Bradstreet to identify unique business establishments. D-U-N-S Numbers are assigned to businesses worldwide. The ninth digit of the D-U-N-S Number is a Modulus Ten Check Digit which catches 100% of single digit errors and 98% of single transposition errors. D-U-N-S Numbers provide positive identification of business locations possessing unique, separate, and distinct operations. Through the D-U-N-S Number, Dun & Bradstreet maintains linkage between units of an organization to easily identify corporate family relationships, such as those between headquarters, branches, subsidiaries, and divisions. The D-U-N-S Number is the non-indicative computer "address" of a business for which detailed marketing and credit information is maintained by Dun & Bradstreet.

Available From: 

U.S. D-U-N-S Number assignment and lookup services are available through EDI, on-line, several types of mainframe and personal computer media, through a 900 Number Service (900-990-3867), and in print.

Dun & Bradstreet Information Services
Information Quality Department
D-U-N-S Number Administration
899 Eaton Avenue
Bethlehem, PA 18025-0001

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