Belarus IBAN: format, length and checker
A Belarus IBAN starts with BY and has 28 characters. Belarus is not part of SEPA.
Runs in your browser: nothing is sent to us. Checks length and the ISO 7064 mod-97 checksum.
Structure
| Country code | BY (2 letters) |
| Check digits | 2 digits (mod-97) |
| National account number (BBAN) | 24 characters |
| Total length | 28 |
| SEPA | no |
Check IBANs automatically
The IBAN check API validates IBANs for invoicing, payout and onboarding flows (0.001 USDC per call), and names the bank for Dutch IBANs. Pair it with the company check and sanctions screening.
Questions
How many characters does a Belarus IBAN have?
28 characters: the country code BY, two check digits, and a 24-character national account number (BBAN).
Is Belarus in SEPA?
No, Belarus is not in SEPA; transfers use international payment rails.
Does a valid checksum mean the account exists?
No. The mod-97 checksum catches typos; it does not confirm the account or its holder. In the Netherlands, your bank's name check (Verificatie van Betalingsontvanger) matches the holder.