DUNS users include the European Commission, the United Nations, Google, and Apple.
More than 50 global industry and trade associations recognize, recommend, or require DUNS.
Until approximately December 2006, the DUNS number contained a mod-10 check digit to support error detection.
Discontinuing the check digit increased the inventory of available DUNS numbers by 800 million.
Businesses may choose to append four extra alphanumeric characters to their DUNS number.