To get the latest ISO13616 IBAN registry, go to: http://www.swift.com/products_services/bic_and_iban_format_registration_iban_format_r TXT format: http://www.swift.com/dsp/resources/documents/IBAN_Registry.txt PDF format: http://www.swift.com/dsp/resources/documents/IBAN_Registry.pdf Unfortunately, it has been noticed in 2011 that the official .txt file is not an accurate representation of the PDF format specification, and lacks some information. It is hoped that in future SWIFT will be more careful to publish only correct standards information. It has been noted in 2014 that this is still the case. (For more information on this subject, see the HACKING file)