Bank Routing Number

American Business Bank Routing Number

The primary ABA routing number (RTN) for American Business Bank, Los Angeles, CA is shown below.

Primary ABA / RTN

122042807

Verify before you send money. This is the bank's primary registered routing number, taken from the FFIEC National Information Center institution record (last refreshed here on October 8, 2026). Banks often use a different routing number for wire transfers than for ACH, and large banks vary it by region; always confirm the correct number on a check or with your bank before initiating a transfer.

What is an ABA routing number?

An ABA routing number, also called a routing transit number (RTN), is a 9-digit code that identifies a U.S. financial institution in the payment system. It tells ACH transfers, Fedwire payments, and paper checks which bank to route money to. The format was created by the American Bankers Association in 1910 and is still the backbone of U.S. domestic payments.

What is the difference between a routing number and an account number?

Your routing number identifies the bank; your account number identifies your specific account at that bank. On a paper check, the routing number is the 9-digit number in the bottom-left, and the account number is to its right.

What is the American Business Bank routing number?

The American Business Bank routing number is 122042807. It is the primary ABA routing transit number registered to American Business Bank, headquartered in Los Angeles, CA. A bank can hold more than one routing number, so this is the one on record for the institution, not necessarily the one printed on every check. The number comes from the FFIEC National Information Center institution record, last refreshed here on October 8, 2026.

What is the American Business Bank wire routing number?

This page lists 122042807, the primary routing number registered to American Business Bank. The record does not say whether the bank uses the same number for wire transfers, and many banks use a separate routing number for domestic wires. Confirm the wire routing number with American Business Bank before sending a wire.

Is ABA number 122042807 the routing number for American Business Bank?

Yes. ABA number 122042807 is the primary routing number registered to American Business Bank. Check it against the routing number on a check or in your online banking before sending an ACH payment, because a bank can use different numbers by region or product.

Which bank uses routing number 122042807?

Routing number 122042807 belongs to American Business Bank, headquartered in Los Angeles, CA. It is the bank's primary ABA routing number (FDIC certificate 34788).

Routing numbers in Los Angeles, CA

Bank: City National Bank: 122016066
Bank: Banc of California: 122238200
Bank: Cathay Bank: 122203950
Bank: Bank of Hope: 122041235
Bank: Hanmi Bank: 122039399
Bank: Preferred Bank: 122042205
Bank: SMBC Manubank: 122226076
Bank: CTBC Bank Corp. (USA): 122210406

All routing numbers in California

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Regulator records: FDIC BankFind (cert 34788) · FFIEC NIC profile (RSSD 2734729)