Definitions for "Routing Number"
Keywords:  aba, nine, ach, odfi, identification
A routing number is used for billing the bank account paying by check. The bank routing number and account number are printed at the bottom of every check. The standard format is a 9-digit number (example: 101010101).
The ABA number which designates the institution the instrument is drawn off of.
an identification number assigned to each Financial Institution and each branch office