About IBANGuardian
IBANGuardian is a small, focused set of tools: an IBAN checker, an account-number-to-IBAN calculator, and a test IBAN generator for developers. No account, no upsell funnel, no dark patterns - the tool you clicked for is the first thing on every page.
Who is behind it
The site is operated by ZENOM Kft., a Hungarian company whose team brings more than twenty years of financial-sector experience in audit, compliance and anti-money-laundering (AML) work, including fund administration and payment operations. That background shapes two design decisions you can verify yourself. First, correctness over marketing: every factual claim on this site is tied to a named data source and a date, and the supported-country count is the number of countries listed in the ISO 13616 IBAN Registry, computed from the same country specifications the validator itself runs on rather than hand-maintained. Second, data minimisation as architecture: a bank account number is personal data, so the cleanest way to protect it is to never receive it.
How the tools work
All validation and generation logic runs in your browser. The site is a set of static pages; there is no backend that could log your input. The validation core is the open-source ibantools library, the country reference data comes from that same library's country specifications, and the Hungarian bank data comes from the GIRO bank code list. You can audit the network behaviour with your browser's developer tools: no request carries an IBAN.
What this site will not do
We do not offer bulk IBAN generation, CSV export or a public generation API, because those primarily serve abuse. We do not tell you an account exists - no structural check can, and claiming otherwise would be dishonest. And we do not provide banking or financial advice; for a real transfer, your bank's own verification is the authority.