So if you have multiple checking accounts (such as a personal and business accounts) they all have unique account numbers. Though a routing number is specific to your bank or credit union ...

checking, savings, certificates of deposit or credit union share certificates, banking experience and overdraft fees. Factors we consider, depending on the category, include rates and fees ...

The credit union has no monthly fee on its membership savings account but requires a minimum balance or direct deposits to waive the basic checking account fee. There’s also a steep overdraft ...