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Leading Digits – UPC A

The first digit of a UPC-A is the manufacturer’s identification number. It is called the number system character. The following table shows you what different number system characters mean

0: Standard UPC number

1: Reserved
2: Random weight items (fruits, meat, vegetables, etc.
3: Pharmaceuticals
4: In store marketing for retailers (a store can set up unique barcodes for themselves, but no other store will be able to read them)

5: Coupons
6, 7 Standard UPC number
8: Reserved
9: Reserved