Routing Number Generator

The Routing Number Generator by Qodex is a simple and efficient tool that creates random, Luhn-compliant U.S. bank routing numbers. Routing numbers are essential in identifying banks during domestic transfers within the U.S. and are often required in direct deposit, ACH, and wire transactions.

For developers and testers, using real routing numbers can trigger live API behavior or risk data integrity. This tool generates fake but format-valid routing numbers designed for safe use in non-production environments.Core Features and Benefits:

What is a Routing Number?

A routing number (also called an ABA or RTN) is a 9-digit code used in the United States to identify financial institutions during electronic transactions. It’s most commonly found on checks, direct deposit forms, and online banking portals.

Using dummy routing numbers for testing helps avoid unauthorized transactions while ensuring that your application’s logic, formatting, and error handling work correctly.

What does ABA stand for?

ABA stands for the American Bankers Association. This organization established the routing number standard back in 1910, which is why routing numbers are often referred to as “ABA numbers.” This system helps uniquely identify banks and credit unions throughout the U.S. Financial network, streamlining the process for various types of electronic payments and transfers.

Can a Bank Have More Than One Routing Number?

Absolutely—many major banks, like Chase, Bank of America, and Wells Fargo, use multiple routing numbers. Large financial institutions often assign different routing numbers based on region, account type, or the specific branch where an account was opened. For example, the routing number printed on your checks might differ from the one used for wire transfers or electronic payments. This approach helps banks manage transactions across a wide network and ensures smooth processing for their customers.

Do All Banks Use the Same Routing Number?

No—most major banks, including Chase, Bank of America, and Wells Fargo, actually use multiple routing numbers. The routing number assigned often depends on factors like the state where you opened your account, the type of transaction (ACH, wire, etc.), or even the specific branch. This system helps large banks efficiently manage high transaction volumes across different regions and services. For your testing and validation purposes, it’s useful to know that a single bank can have dozens of valid routing numbers in circulation.

Where to Find Routing and Account Numbers on a Check

If you’re looking at a typical U.S. Paper check, you’ll see a series of numbers along the bottom edge. The 9-digit routing number is usually the very first set of numbers on the left—this identifies the financial institution that issued the check, such as Chase, Wells Fargo, or Bank of America. Immediately following the routing number is your personal bank account number, which is unique to your account. The last group of numbers is the check number itself.

So, when you need to locate your routing number and account number for things like direct deposits or online payments, just glance at the lower edge of your check for these clearly printed codes.

Key Features and Benefits

• Valid Format, Safe Output - All generated routing numbers follow the official 9-digit structure and pass the Luhn check for syntactic correctness.

• Instant & Unlimited Generation - Click once to generate a new routing number. Repeat as needed—no sign-up or limits.

• Ideal for QA & Payment Form Testing - Test scenarios like ACH setup, form field validation, or financial onboarding flows without using real bank data.

• Developer-Friendly - Use in CI/CD pipelines, local dev environments, or fintech app staging servers. No risk of leaking sensitive financial info.

• Integrates with Other Qodex Tools

  Pair with:

  • IBAN Generator for international account testing

  • Credit Card Generator for full payment simulations

  • Email Generator to build mock customer profiles

Example Output

Here are sample routing numbers the tool may generate:

• 124003116

• 021000021

• 067012098

  
  

These numbers are for testing only and are not linked to real banks.

 How to Use

1. Click the Generate button

2. View the 9-digit routing number instantly

3. Use the Copy button to paste it into your app, sandbox, or form

4. Repeat for as many routing numbers as needed

   
   

Common Use Cases

• Payment gateway sandbox testing

• Direct deposit and ACH form simulations

• Validating backend systems for U.S. bank transactions

• QA testing for account onboarding flows

• Testing fake financial profiles with UUID Generator, Phone Number Generator, and Username Generator

  
  

Recommended Companion Tools:

• IBAN Generator

• SWIFT Code Generator

• Credit Card Generator

• Username Generator