BankCodeKit

Bulk IBAN tool

Bulk IBAN Validator

Paste one IBAN per line and validate the list locally. Format validation only. No file upload, no login, no storage.

Bulk local check

Validate IBANs in bulk

Paste one IBAN per line. Format validation only. No upload, no login, no storage.

One IBAN per non-empty line. CSV output is generated in the browser from the current results.

Run validation to enable CSV download.

All checks run locally in your browser. Nothing is uploaded.

  • BankCodeKit validates format and reference data only. It does not confirm account existence, account ownership, bank connectivity, sanctions status, fraud risk, payment readiness, or payment success.

No bulk validation run yet.

No bulk validation run yet

Paste one IBAN per line, or use the mixed test examples, then validate the list locally.

How the bulk IBAN validator works

The validator reads each non-empty line, removes spaces and hyphens, and runs the same local format and checksum checks as the single IBAN checker.

What this tool checks

  • Supported IBAN country code.
  • Expected country-specific IBAN length.
  • Allowed characters after normalization.
  • MOD97-10 checksum status.
  • Invalid reasons for each failed line.

What this tool does not check

  • It does not upload or import files.
  • It does not confirm account existence or account ownership.
  • It does not confirm bank connectivity, sanctions status, fraud risk, payment readiness, or payment success.
  • It does not save IBANs in browser storage or on a server.

CSV privacy reminder

The CSV contains the values you pasted. CSV generation stays in the browser, but the exported file should be handled as sensitive payment data.

FAQ

Is the pasted list uploaded?

No. The textarea contents are processed locally in your browser.

How is the CSV created?

The CSV is generated in the browser from the current validation results. No server is involved.

Does a passed row confirm account existence?

No. A passed row only means the visible format and checksum pass the supported rules.

Browser-local results

The validation summary and CSV export are generated from the current browser session. Review the results before deciding whether to handle or share an exported file through a separate trusted process.