-  FedBizOpps is the official FREE online listing of Government contracting opportunities which are published at the Federal Business Opportunities site. The address is https://www.fbo.gov/. Published daily by the Department of Commerce

-  Information in the FedBizOpps site:
-  Solicitation Number
-  Description of requirement
-  Due date for receipt of offers
-  Set-aside status
-  Contact person & telephone number
-  Subcontracting opportunities
-  Potential sources sought
-  Business news
-  Surplus property sales
-  Foreign Government standards
-  FEDBIZOPS & ORCA

http://www.dnb.com/

DUN and Bradstreet (DUNS) numbers and Contractor Entity Codes (CECs) can be obtained by calling 800-333-0505 (8am-6pm EST). Both the call and service are free.

http://www.sba.gov/

In order to certify itself as such, a small disadvantaged business firm must now be certified by the Small Business Administration (SBA).