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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?

Get 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 get started here.

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Look Up a
 D‑U‑N‑S

How Do I Look Up a
 D‑U‑N‑S Number?

Look up your own D‑U‑N‑S Number or the number of a company you want to do business with.

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Update Info

How Do I Update My Company’s Business Information?

If you’re a Canada‑based, non‑public company, you can request updates to your company’s business information for free.

Call Us

Require a D-U-N-S

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

Many businesses will use your D-U-N-S Number to access your company’s Dun & Bradstreet credit profile to help evaluate you as a partner.

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Government Contracts

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

A D-U-N-S Number may no longer be required for government contracts, but there are still many benefits for your business.

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myD&B Mobile App Screenshot

myD&B Mobile App

Your mobile command center for D-U-N-S, business credit, and more.

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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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