BI IBAN Validator & Format Checker
Validate and decode any BI International Bank Account Number (IBAN). Test the structure against the official format mask, check digits, and run an offline bank lookup.
BI IBAN Structure Rules
Every International Bank Account Number in BI follows a standardized format registry layout:
| Country Code | BI (BI) |
| Total Length | 27 characters |
| SEPA Member | No (Non-SEPA) |
| Structure Format Mask | BI14 1234 5678 9012 3456 7890 123 |
| BBAN Regex Pattern | ^[0-9]{23}$ |
| Bank Code Range | Characters 5 to 9 (5 digits) |
| Branch Code Range | Characters 10 to 14 (5 digits) |
| Account Number Range | Characters 15 to 27 (13 digits) |
Frequently Asked Questions
How long is a BI IBAN?
A BI IBAN consists of exactly 27 characters. It starts with the country code 'BI', followed by two check digits, and then the Basic Bank Account Number (BBAN).
What is the format of a BI IBAN?
The official format mask for a BI IBAN is 'BI14 1234 5678 9012 3456 7890 123'. The BBAN component matches the structure pattern '^[0-9]{23}{{FAQ_ACCORDION}}#039;.
Does BI participate in SEPA?
BI is not a member of the Single Euro Payments Area (SEPA). International wire transfers to BI typically route via the SWIFT network.
How do I decode a BI IBAN?
A BI IBAN can be decoded into: the country code 'BI' (characters 1-2), check digits (characters 3-4), and the domestic bank account identifier containing the bank identifier (characters 5-9), and branch code (characters 10-14), and account number (characters 15-27).