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ABA Routing Number Generator

ABA Routing Number Generator

Generate 9-digit US ABA routing numbers with the official weighted Mod-10 check — synthetic mock data only

For Development & Testing Purposes Only - Synthetic Mock Data

Privacy Notice: This tool runs entirely in your browser. Nothing you generate or enter is sent to any server or stored anywhere.

Options

Generate one checksum-valid mock value. Open Bulk for up to 500 records.

About this tool

Generate mock US ABA routing numbers by Fed district and institution type. Checksum-valid test data only. ABA Routing Number Generator runs in the browser on DevTools. There is no signup, and your input stays on this device unless the tool explicitly performs a live network lookup.

What this tool does not do

  • ABA Routing Number Generator is a free in-browser utility, not a hosted API. It does not keep server-side history and is not a substitute for production verification in your own stack.

How do I use this tool?

  1. How do I use ABA Routing Number Generator?

    Open ABA Routing Number Generator, enter or paste your input, and copy the result. The page works without an account.