A check routing number is a nine-digit number, to identify the financial institutions . There are three sets of numbers at the bottom of the check, the sets of numbers with nine digits are the check routing number. The second sets are Check Account Number .

Most of the banks will have only one routing number. Some major bank which operates in multiple regions might have more than one check routing number.

Significant banks may have more than one routing number. It is dependent upon things like the location of the account or for any other critical mission of the routing number is utilized. However, it signifies that no two banks will ever have the equivalent routing number. When you create a check or write a check, the sets with nine digits at the bottom of the checks are the routing number for that financial institution.