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Here are the countries require IBAN number only
France & Spain
What is IBAN?
International Bank Account Number. This number is a standard international numbering system developed to identify an overseas bank account. You can find your IBAN through online research or on your account statement.
Format : 2 LETTER COUNTRY CODE, 2 NUMBER CHECK DIGITS - 11 NUMBER BBN CODE
To know more visit - https://www.ibancalculator.com/