In a word, no. It’s the equivalent of IP space - it’s a fixed format (a subset of the EAN/UPC format) with a finite number of entries, and it’s a unique key, so

In a word, no. It’s the equivalent of IP space - it’s a fixed format (a subset of the EAN/UPC format) with a finite number of entries, and it’s a unique key, so there has to be a single issuing party.