CMCIBEB1 is a shared BIC prefix

CMCIBEB1 is not one bank's SWIFT code. It is the first eight characters of a code that 2 different banks in Belgium share, and it belongs to none of them on its own. In the German savings-bank and cooperative networks the opening characters identify the network and the last three identify the member, so the full eleven-character code is what tells one bank from another.

Looking for the bank behind an account? Paste the IBAN into the IBAN checker. The account's own routing code identifies the bank exactly, which an eight-character prefix cannot do.

The 2 banks that share CMCIBEB1

From the national routing register. The routing code is the one that appears inside an IBAN.

BankCityFull BICRouting code
Banque Transatlantique BelgiumCMCIBEB1BTB588
Crédit Industriel et Commercial - Succursale de BruxellesCMCIBEB1CIC667

See the Belgium IBAN format for where the routing code sits inside an IBAN, or browse the bank directory.