+1 for that thought!

I suspect ordering numbers may also involve a minimum quantity, so if that is the case, it could be part of the criteria. I do not know if they all have to be from 1 area either?

Not to make this overly complex ... There may also be the option of choosing the reserved inventory that allows outbound CNAM, Phone Book Listing, and other things that the Reseller could charge more for if targeting Business Clients.