BY IBAN Validator & Format Checker
Validate and decode any BY International Bank Account Number (IBAN). Test the structure against the official format mask, check digits, and run an offline bank lookup.
BY IBAN Structure Rules
Every International Bank Account Number in BY follows a standardized format registry layout:
| Country Code | BY (BY) |
| Total Length | 28 characters |
| SEPA Member | No (Non-SEPA) |
| Structure Format Mask | BY23 ABCD 1234 1234 5678 9012 3456 |
| BBAN Regex Pattern | ^[A-Z]{4}[0-9]{4}[A-Z0-9]{16}$ |
| Bank Code Range | Characters 5 to 8 (4 digits) |
| Account Number Range | Characters 9 to 28 (20 digits) |
Frequently Asked Questions
How long is a BY IBAN?
A BY IBAN consists of exactly 28 characters. It starts with the country code 'BY', followed by two check digits, and then the Basic Bank Account Number (BBAN).
What is the format of a BY IBAN?
The official format mask for a BY IBAN is 'BY23 ABCD 1234 1234 5678 9012 3456'. The BBAN component matches the structure pattern '^[A-Z]{4}[0-9]{4}[A-Z0-9]{16}{{FAQ_ACCORDION}}#039;.
Does BY participate in SEPA?
BY is not a member of the Single Euro Payments Area (SEPA). International wire transfers to BY typically route via the SWIFT network.
How do I decode a BY IBAN?
A BY IBAN can be decoded into: the country code 'BY' (characters 1-2), check digits (characters 3-4), and the domestic bank account identifier containing the bank identifier (characters 5-8), and account number (characters 9-28).