IBAN Validator: Verify & Bulk-Check Bank IBANs
Validate IBANs offline against ISO 13616 — checksum, structure and SEPA coverage, single or bulk.
In plain language.
Every IBAN encodes a country-specific length and a two-digit checksum computed from the rest of the number. This tool runs the full ISO 13616 check — mod-97 checksum plus each country's own structure — entirely offline, in well under a second.
Instead of one flat true/false, you get the exact reason the moment something's wrong: a bad checksum, a bad structure for that country, an unrecognized country prefix, or bad input — so you know exactly what to fix.
Runs the same whether a person pastes one IBAN or an AI agent bulk-checks a thousand mid-workflow.
Who it's for
- Finance and ops teams cleaning a payment or supplier IBAN list
- Payment platforms validating an account before a payout
- AI agents that need an IBAN check as one step in a larger workflow
Pricing
$0.005 per IBAN checked.
No subscription. Failed or empty inputs are never charged.
Fewer knobs. Better defaults.
Offline & instant
No bank API, no network dependency — a 1,000-IBAN batch finishes in well under a second.
Honest error reasons
Five distinct failure statuses — bad checksum, bad structure, wrong length, unknown country, bad input — instead of one flat true/false.
SEPA-aware
Every result flags whether the country is one of the 36 official SEPA scheme participants.
Same tool, callable as an MCP server.
IBAN Validator runs on Apify, which means it's exposed as a remote MCP tool with no extra setup. Point any MCP-compatible agent (Claude, Cursor, and others) at the endpoint below.
View full API reference on Apify{ "ibans": ["GB29NWBK60161331926819", "DE89370400440532013000"] }