IBAN-Test

Bad bank details are cheap to enter and expensive to discover later. IBAN-Test checks IBAN format, length and checksum across 111 countries and adds bank-directory validation where reliable data is available. Use the free browser tool for instant checks and IBAN generation, or automate validation in forms, shops, SaaS products and SEPA workflows through the REST API. AI agents can connect through MCP to validate individual IBANs or batches, check BICs and German bank accounts, and generate test IBANs. Start with 10 free API checks, then scale with your volume. Entered IBANs and account details are not stored permanently.