Dun & Bradstreet (DNB) is a 180-year-old company that supports companies in the areas of sales, finance, compliance, procurement, and marketing.

Dun & Bradstreet is one of the world's leading suppliers of business information and research. Its global database contains commercial data on more than 240 million companies. Dun & Bradstreet also holds the largest volume of business-credit information in the world.

The DUNS Company Lookup method searches the Dun and Bradstreet database for a company match. The search can be made essentially by the company's DUNS number but other parameters can be used as well. For example: company name, email address, postal code, and so on.

No, every business doesn't need a DUNS number. That said, it can help you build good business credit and is necessary if you want to apply for certain types of funding. It's also required for a credit report from Dun & Bradstreet.