Validate IBAN numbers from 80+ countries. Country code, length, format, and mod-97 checksum. Free 50/day. Now with a landing page and 30 country-specific validator pages.
How to pay
Pick whichever fits your workflow — you can switch any time.
Subscribe
$19/month
Predictable monthly cost with included usage. Best for steady, high-volume traffic.
- Unlimited tools within plan limits
- One API key, billed once a month
- Cancel any time
Pay-per-call
$0.01 – $0.02 per call
Charge agents in USDC the moment they call a tool. No subscriptions, no signup — pay only for what you use.
- 2 priced tools available
- Settled in USDC on Base
- No account or API key required
Validate IBAN (International Bank Account Number) instantly. Checks country code, length, format, and mod-97 checksum according to ISO 13616. Returns country, check digits, BBAN.
Tools:
- validate_iban — validate a single IBAN
- validate_iban_batch — up to 50 IBANs in one call
Example
Input: DE89370400440532013000
Output: { "valid": true, "iban": "DE89370400440532013000", "country_code": "DE", "check_digits": "89", "bban": "370400440532013000", "length": 22 }
Links
- Landing + live demo: https://boring-saas-infra.pages.dev/finance-tools
- IBAN validator page: https://boring-saas-infra.pages.dev/validate/validate-iban
- 30 country-specific pages: https://boring-saas-infra.pages.dev/validate/ (Germany, France, UK, Spain, Italy, Netherlands, Belgium, Switzerland, Poland, and more)
- Pricing: Free 50/day · Pro $19.99/mo -> https://checkout.suby.fi/p/pro_v1vsrhgd50oz4f0g266g33am
Notes
- Format + checksum only. Does not verify account existence or activity.
- No API key needed for free tier.
- REST endpoint also available at: https://finance-validators.boring-saas-infra.workers.dev/iban