Forum OpenACS Q&A: Re: Looking for online SKU database (is there a web/db forum?)
What I know is that what I heard/read/... was SKU. However, that author may have meant UPC and indeed, with your hint, google reveals many UPC resources.
There's one at http://www.upcdatabase.com, and there's a good chance it was what the original article was referring to. If you wander around that site you can find links to a sourceforge project to deal with UPCs and a snapshot of this project's UPC database. But that database makes no claim to be comprehensive or up to date.
I am curious about your SKU. How did you go about obtaining some sort of SKU thingie? (Reminds me of CIDR?) How much was that? How unique do you think your SKU numbers are? ???