The Central contractors registry is often a free online registrant database to the US Federal Government that collects, validates, disseminates and stores data. Central contractors registry collects some data coming from Dun and Bradstreet; therefore a DUNS number is often a prerequisite to signing up in Central contractors registry. Once an individual file your CCR, you can not just forget regarding it. The CCR must be renewed every year but you want to be sure to accomplish it more often than that.