DUNS Number: What You Need To Know

February 18, 2019
Category: Getting Started

Every Government Contractor must have a DUNS number. Do you know what it is and how to get it?

Then keep reading. In this article, you’ll learn everything you need to know about a DUNS number and how to get free help.

What is a DUNS Number?

A DUNS Number is a nine-digit unique business identifier required for registration at SAM.GOV, the official vendor registration portal for vendors seeking to do business with the U.S. Federal Government.  DUNS Numbers are both business-specific and location-specific. A company with multiple offices in different geographic locations may elect to have multiple DUNS numbers as well as SAM.GOV vendor profiles.  However, a company can also manage with just one if they have a centralized structure where their headquarters manages all procurement activity and receives payment from the government.  

How Do You Get a DUNS Number?

DUNS Numbers are assigned by Dun & Bradstreet (D&B), a private company that tracks and provides commercial data to businesses and government agencies for a variety of purposes such as credit history, risk exposure, supply chain information and the like.  

Businesses looking to register at SAM.GOV can obtain a free DUNS number by visiting  You can also contact DUNS directly at 1-866-705-5711.

DUNS Number and SAM.GOV Registration Are Free.

Do not pay for a DUNS number or SAM.GOV registration.  Because Dun & Bradstreet is a private company, you may be offered additional services or enhanced features for a fee, but you don’t have to purchase them. Just opt-out, and that’s it!

Where Can You Find Help?

If your business requires assistance with SAM.GOV registration, be sure to connect with your local Procurement Technical Assistance Center(PTAC), a program funded in part by the Department of Defense that provides free counseling support and other services for contractors interested in doing business with the federal government.  You can find a PTAC in your area by visiting the Association of Procurement Technical Assistance Center’s website at