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