Unfortunately I can't speak directly to this. Our correlation was done using the acquiring bank's BIN, and this information is readily available on some normal

Unfortunately I can't speak directly to this. Our correlation was done using the acquiring bank's BIN, and this information is readily available on some normal VISA cards, and even some prepaid cards (due to the CARD act, these are almost exclusively currently for use inside the US only). This isn't some super secret information, the specialty issuer helped the most with creating several one-off cards in specific values and other logistical concerns.