How to mask SEPA (IBAN and BIC) information correctly?

I'm currently developing a payment system where users can use SEPA-debit to pay for the service. The user has the ability to enter the data once and can then select the same payment method when making another payment in the future.

So in order for the user to select the proper account to debit, I need to show some information about her/his accounts. In the world of credit cards it is normal to mask all but the last 4 digits of the card number, e.g. XXXX-XXXX-XXXX-1234

Should I also hide all but the last 4 digits when displaying IBAN numbers? And should I do the same for the BIC, or is it safe to display the complete BIC number?