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D‑U‑N‑S Number

About the D‑U‑N‑S Number

Find answers to your D‑U‑N‑S^® Number questions here.

What Is a D‑U‑N‑S Number and Why Do I Need It?

The Dun & Bradstreet D‑U‑N‑S Number is a unique nine-digit identifier used exclusively for businesses. It's entirely separate from a personal identity and helps business entities establish credibility, improve visibility, and potentially unlock new opportunities, such as partnerships, loans, and contracts.

The information provided in articles are suggestions only and based on best practices. Dun & Bradstreet is not liable for the outcome or results of specific programs or tactics undertaken based on your use of the information. Please contact an attorney or financial/tax professional if you are in need of legal or financial/tax advice.

How Do I Get, Find, and Manage a D‑U‑N‑S Number?

How Do I Get a  D‑U‑N‑S Number?

Getting a D‑U‑N‑S Number is free, so gather your basic business information and click "Get Started" below.

Get Started

How Do I Look Up a  D‑U‑N‑S Number?

Look up your own D‑U‑N‑S Number, or the D‑U‑N‑S Number of a company you want to do business with, using the D-U-N-S Lookup tool.

Look Up a Number

How Do I Update My Company’s Business Information?

If you’re a U.S.‑based, non‑public company, you can view and request updates to your company’s business information for free through the D‑U‑N‑S Manager.

View My Information

Do Companies Require a D‑U‑N‑S Number?

Organizations may use your D-U-N-S Number to evaluate your business credit profile, maintain their records, onboard your company, and maintain compliance.

Find Out More

Do I Need a D‑U‑N‑S Number to Work on Government Contracts?

A D-U-N-S Number isn't required for U.S. federal government contracts, but many other agencies, governments, and companies around the world still use it.

Learn How

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5 Myths About D‑U‑N‑S Numbers

There's a lot of misinformation out there around the D‑U‑N‑S Number. This video clears up five common myths to help you gain a better understanding what the D‑U‑N‑S Number can do for your business.

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