An IBAN or International Bank Account Number is a series of alphanumeric characters that uniquely identifies a customer’s account held at a bank anywhere in the world.
An International Bank Account Number typically contains a two-character ISO country code, two check digits for validation purposes followed by the domestic bank code and account number.
Example of a UK IBAN:
Please see Bank account validation - BANK WIZARD, IBAN - an introduction, BANK WIZARD - BIC and IBAN validation and bank account validation