What is a D-U-N-S® Number?

The D-U-N-S Number is a unique nine-digit identification number, developed by D&B in 1962. The D-U-N-S Number is a unique global business identification system that identifies, validates, and relates more than 270+ million businesses worldwide.

The D-U-N-S Number at a Glance

The D-U-N-S Number is established. The D-U-N-S Number has existed for more than 50 years and is relied on by businesses and government agencies around the world.
It is global. D-U-N-S Numbers are currently assigned to businesses in more than 190 countries around the world.
It is proprietary. Only D&B assigns D-U-N-S Numbers which helps ensure accuracy, consistency and integrity. We follow rigorous rules for assignment and maintenance. We assign D-U-N-S Numbers to business locations with a unique, separate and distinct operation. D-U-N-S Numbers are assigned to all types of business organizations including sole proprietorships, corporations, partnerships, and government entities.
It is lasting. The D-U-N-S Number stays with a business throughout the duration of its life cycle, even bankruptcy.
It is non-indicative. The nine digits in a D-U-N-S Number are not indicative of any aspect of the company to which it is assigned. It is intensively maintained.

Loading

What is a D-U-N-S® Number?