About the list
The National Bank of Belgium (Protocol Secretariat) assigns each financial institution one or more ranges of 3-digit codes. These are the first three digits of every Belgian
account number, and therefore digits 5–7 of a Belgian IBAN (BE68 5390 0754 7034). The list here is the official NBB file, embedded in this
page; its version date is shown above the results. Ranges marked unavailable are reserved or retired.