I have a prepaid debit card and tried to use it to obtain a pay day loan and said my routing number is blacklisted. What does it mean

If a payday loan organization recognizes your prepaid debit card’s routing number to be blacklisted, that means they no longer want to do business with whoever issued your card. This could be for a number of reasons, usually because that specific card issuer has been the source of unfavorable activity such as fraud.

A routing number, issued by the ABA (American Bankers Association) identifies which banking institution is associated with the debit card. An ABA routing number is also found on the bottom of personal checks. It is essentially a universally recognized ID number.

The American Bankers Association was founded in 1875 in Saratoga Springs, New York. Today, there are roughly 30,000 ABA routing numbers. The nine digits contain not only the detailed location of the bank that issued the check or debit card, but also which of the 12 Federal Reserve Banks corresponds to your bank's location.