United States Banking Institution Account Number Regular Expression?

Question

I have been tasked to \"verify\" the length of a U.S. Banking Institution ACCOUNT NUMBER for a web app I\'m developing. I cannot find anything through SOF, Google, Fed reser

Answer 1

There is no standard for a bank account number in the US. There is a standard for the routing number, because that's shared between banks; the account number, however, is only of use internally by the bank itself.