Bulk IBAN tool
Bulk IBAN Format Checker
Paste one IBAN per line and review the list locally. Format checks only. No file upload, no login, no persistent storage.
How the bulk IBAN format checker works
The checker reads each non-empty line, removes spaces and hyphens, and runs the same local format and checksum checks as the single IBAN checker.
Checks applied to each IBAN row
- Supported IBAN country code.
- Expected country-specific IBAN length.
- Allowed characters after normalization.
- MOD97-10 checksum status.
- Invalid reasons for each failed line.
How to read bulk results
| Row result | Meaning | Recommended review step |
|---|---|---|
| Valid row | The row passes local country, length, character, and checksum checks. | Keep it in manual review, but still verify the payee and payment details elsewhere. |
| Invalid checksum | The row may contain a copied or typed character error. | Compare with the original invoice or trusted source. Do not invent corrected digits. |
| Wrong length | The row may have missing characters, extra reference text, or a domestic account number instead of an IBAN. | Return to the source document before editing the row. |
| Unsupported country | The country code is not covered by the current local reference data. | Use a bank or payment provider source before treating the value as payment-ready. |
What bulk results leave for manual review
- 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.
Small-list review workflow
- Paste only the rows needed for the current review session.
- Run the local format review and read each invalid reason before editing source data.
- Do not fix failed rows from memory. Compare them with the original invoice, payee record, or trusted source.
- If you download CSV results, store the file privately and delete it when the review is complete.
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 format-check 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 format-check 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.
Bulk checker data sources and update note
Public references for browser-local bulk IBAN format review are linked below; detailed standard scope, review methods, and licensing boundaries are documented on the Sources and Updates page.
Matching the cited format and reference data for browser-local bulk IBAN format review does not confirm account existence, ownership, bank reachability, or payment success. Read the detailed disclaimer.
Reference data reviewed: 2026-07-17 Next scheduled data review: 2026-10-17 Sources: Swift IBAN Registry Reference data is reviewed periodically. BankCodeKit does not perform live bank, account, sanctions, or payment-network confirmation.