Find your bank from a routing number.
Paste any 9-digit ABA routing number — we'll show you the bank that owns it, plus any institutions that route payments through it. Free, instant, and covers 14,000+ US routing numbers.
Try an example
Three steps. No signup.
- 01
Paste the routing number.
Grab the 9-digit number from the bottom of a check or from your bank’s app. Paste it into the search box above.
- 02
See the owner bank.
We check it against every US ABA routing number in our dataset — more than 14,000 across all 50 states, including the sponsor banks that power most fintech accounts.
- 03
Send a check if you need to.
If the bank is supported by Check Supply, you can mail a real paper check from that account in a couple of minutes.
Routing numbers, answered.
- What is a routing number?
- A routing number (also called an ABA routing transit number or RTN) is a 9-digit code that identifies a specific US financial institution. It is used to process ACH transfers, wire transfers, and paper checks so money moves to the correct bank.
- Where do I find my routing number?
- On a paper check, the routing number is the first 9-digit number printed along the bottom left, before your account number. You can also find it by signing into your bank or credit union online or in their mobile app — look for account details or a direct-deposit form.
- Why does one routing number show more than one bank?
- Every ABA routing number is owned by a single institution — the bank of record with the Federal Reserve. But smaller banks, credit unions, and most fintechs do not have their own number; they process ACH and check traffic through a larger sponsor or correspondent bank. In that case, your account may live at one institution while the routing number itself points to the sponsor bank. This tool lists the owner first, followed by any institutions that route payments through it.
- Is an ACH routing number the same as a wire routing number?
- Not always. Many banks use different routing numbers for ACH transfers and domestic wires, and sometimes a third number for international wires. Check with your bank if you are sending a wire; this tool covers ACH/check routing numbers.
- How many digits is a routing number?
- Every US ABA routing number is exactly 9 digits. If the number you are looking at is longer or shorter, it is not an ABA routing number — it may be an account number, SWIFT code, or international transit number instead.
Mail a check from that account in a couple of minutes.
Check Supply connects to your bank and mails a real paper check the same day — with optional Certified, Priority, or Express Mail. No printer. No envelope. No trip to the post office.
Looking for a specific bank guide? Browse all supported banks →