Is AFSOUS31 a valid SWIFT code?

Yes. AFSOUS31 has the right format and is in our directory for ASTORIA BANK, LAKE SUCCESS. Confirm with the beneficiary that it is the bank that holds their account.

What is the difference between AFSOUS31 and AFSOUS31XXX?

None. AFSOUS31 is the 8-character form of AFSOUS31XXX; XXX at the end means the head office. Either works.

SWIFT/BIC · United States

AFSOUS31

ASTORIA BANK · Head office · LAKE SUCCESS

Code details

SWIFT/BIC: AFSOUS31 (AFSOUS31XXX)
Institution: ASTORIA BANK
Office: Head office
Branch code: XXX · head office
Address: 1 ASTORIA BANK PLAZA, 11042 LAKE SUCCESS
City: LAKE SUCCESS
Country: United States

What AFSOUS31 means

AFSOUS31XXX

AFSOBank code
Four letters chosen by the institution.
USCountry code
United States (ISO 3166)
31Location code
Where the institution sits on the SWIFT network. A 1 in second place marks a passive participant.
XXXBranch code
XXX, or nothing at all, means the head office.

Paying an account at this bank

United States does not use IBAN: send the beneficiary’s local account number with this code. Check an IBAN →

Questions

Is AFSOUS31 a valid SWIFT code?: Yes. AFSOUS31 has the right format and is in our directory for ASTORIA BANK, LAKE SUCCESS. Confirm with the beneficiary that it is the bank that holds their account.
What is the difference between AFSOUS31 and AFSOUS31XXX?: None. AFSOUS31 is the 8-character form of AFSOUS31XXX; XXX at the end means the head office. Either works.

Sending to AFSOUS31?

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About this data

Codes are checked against our directory of banks on TrillioniPay corridors. Always confirm the code with the beneficiary’s bank before sending a payment. Last updated: 23 September 2026.

Institution names and addresses: Global Legal Entity Identifier Foundation (GLEIF) LEI data, available under CC0. The address is the legal entity’s registered or head-office address, which can differ from the office SWIFT lists.

SWIFT © and database rights August 2026. All rights reserved. This Mapping Table has been developed by SWIFT. Any use of the Mapping Table, in whole or in part, is subject to the BIC/LEI Mapping Table License Agreement as published with the Mapping Table available on GLEIF's website. The Mapping Table is updated monthly. For the latest BIC information and updates, always refer to www.swift.com/bic .