The underlying rules for IBANs is that the account-servicing financial institution should issue an IBAN, as there are a number of areas where different IBANs could be generated from the same account and branch numbers that would satisfy the generic IBAN validation rules. It identifies both the bank and the branch where the account is held. Each record on the ISCD has 82 fields. Banks in Northern Ireland can be part of either the British or the Irish clearing system, depending on their country of registration. For a quick search the side bar contains the main search tool. This sort code checker is provided for informational purposes only.