In Europe I can get a list of all banks and their BIC’s via ECB but they don’t contain the bank code part of the IBAN to do a match. At least I can’t see a way from that dataset to perform a match.

https://www.ecb.europa.eu/stats/financial_corporations/list_of_financial_institutions/html/daily_list-MID.en.html

Swift has responsibility for maintaining the list but keeps it behind locked doors. They have an IBAN Plus paid account but there is no hint of the actual pricing on their website, so I assume it’s expensive.

Germany does publish a list of German banks, which is useful, but is just a fraction of the European data.

https://www.bundesbank.de/en/tasks/payment-systems/services/bank-sort-codes/download-bank-sort-codes-626218

Does anyone know of any other sources?

There are lots of websites (lots of spammy ones too), that expose this data in some way or another, which I guess could be scraped, but I assume they aren’t paying Swift for simple spamming Google.

I’m not looking for an API service. I’m trying to build an open source validator and bank name / BIC lookup.