Locate the MICR (Magnetic Ink Character Recognition) line, which is a series of numbers at the bottom of your check. The MICR line is typically split into three separate sets of numbers.
Identify the first set, which contains nine digit numbers. This is the routing number. Remember that routing numbers always begin with 0, 1, 2 or 3.
Identify the second set of numbers listed on the check, which contains nine digits. This is the account number.