Test IBAN generator — with real bank codes
Most test-IBAN generators emit checksum-valid IBANs with made-up bank codes — even three of the four official example IBANs point at codes no register ever allocated. This generator draws its bank codes live from the national registers (SIX, Bundesbank, OeNB, NBB), so your fixtures survive a real bank-code check. The account digits are random and belong to nobody.
Read the story: the official example IBANs point at banks that do not exist →Country
For your test suite
Same generator, straight from the API — free, no key:
curl "https://api.ibanforge.com/v1/test-iban?country=DE&count=5"Bank codes are real (the registers publish them). Account digits are random — these are NOT real accounts. Do not send money to them.