Data Universal Numbering System -
The DUNS number is a unique nine-character number that identifies your organization. It is a tool of the federal government to track how federal money is distributed.
Central Contractor Registration Database -
CCR is the primary registrant database for the U.S. Federal government. CCR collects, validates, stores, and disseminates data in support of agency acquisition missions. Registration information on the CCR can be found at the link above.