RE:RE:RE:Approval for Future Efforts as a Government Contractor Here's some info from wiki
*Note the 2.6 million entities alone from the USA
The Commercial and Government Entity Code, or CAGE Code, is a unique identifier assigned to suppliers to various government or defense agencies, as well as to government agencies themselves and various organizations. CAGE codes provide a standardized method of identifying a given facility at a specific location.
CAGE Codes are used internationally as part of the NATO Codification System (NCS), where they are sometimes called NCAGE Codes. CAGE codes are referenced in various databases of the NCS, where they are used along with the supplier's part number to form a reference which is held on the National Stock Number (NSN) record. This reference enables users of the NCS to determine who supplies any given part.
The information associated with the entities - name, address, phone numbers, etc. - is catalogued in the H4 and H8 Handbooks. The National Codification Bureau (NCB) of each NATO or NATO-sponsored Nation is responsible for maintaining the CAGE code information for entities in these respective countries. There are on the order of 3 million entities in this catalog, of which around 2.6 million are US entities.[citation needed]