Bulk IBAN Checker - Validate up to 100 IBANs at Once, Free

Built for batch work

Finance teams, marketplaces and developers rarely have a single IBAN to check. Paste the whole list: the checker removes duplicates, verifies each IBAN against the country format rules and the mod-97 checksum, and returns one clean table you can export. A failed row tells you why, for example a wrong length for that country or a typo caught by the check digits.

Automating it? The same capability is available as POST /api/iban-batch, see the API docs. Need more than the free limits? A free IPNOVA API key at api.ipnova.com gives you 5,000 lookups a month and a higher per-minute rate.

Frequently Asked Questions

Everything you need to know about checking IBANs in bulk

How many IBANs can I check at once?

Up to 100 IBANs per batch. Paste them one per line or comma separated; spaces inside an IBAN are fine, and duplicates are removed automatically. Each batch counts as one tenth of its size against the daily free limit.

What does the bulk checker verify?

For every IBAN: the country code against the ISO 13616 registry, the exact length for that country, and the ISO 7064 mod-97 checksum. It also shows the country, whether it is in SEPA, and the domestic bank code where the position is defined. A valid result does not prove the account exists.

Are my IBANs stored?

No. The batch is sent over HTTPS to be validated, the result is returned, and the list is discarded. IBANs are never written to disk, logged or kept in a database, and the response is served with Cache-Control: no-store.

Can I export the results?

Yes. One click downloads the full results table as a CSV file with the IBAN, status, reason, country, SEPA flag and bank code. The file is generated in your browser and never uploaded.