You can find your accurate routing and account number at the bottom of a check from your paper checkbook.
(Note: some checks may have the check number as the first or second set of numbers; however, the routing is always before the account number)
The Routing Number is always 9 digits, and can be confirmed online with a simple search. This number is specific to your bank and is publicly available. You may find it on the bank website as well.
You can also locate your Account Number via your bank statement, or a direct deposit slip. This number is unique to you.
When in doubt, contact your bank. Entering inaccurate bank information can lead to delays.