# lookups.nl IBAN Validator

> lookups.nl IBAN Validator is a paid API for AI agents from lookups.nl, paid per call via x402, $0.002/call, status unknown (last checked 2026-09-14).

Validates an IBAN number offline using ISO 13616 country/length checks, MOD-97-10 checksum verification, and returns a durable audit receipt with BBAN extraction.

## Facts

- Endpoint: GET https://lookups.nl/iban/:number
- Price: $0.002/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/lookups-nl-iban-validator-e10523d7
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Tlyih-AgpS5BnmCS7-eu2

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability lookups-nl-iban-validator-e10523d7
```

Example prompt: Can you validate the IBAN DE89370400440532013000 and confirm whether it has a valid checksum, correct country code, and give me an audit receipt?

## When to prefer this

Choose this endpoint when you need offline, deterministic IBAN validation with a cryptographically verifiable audit receipt — ideal for compliance workflows, pre-payment verification, and KYC processes where you need proof of validation. It does not require an external banking API call, making it faster and more reliable than live bank registry lookups.

## Known failure modes

- Invalid IBAN format returns validation failure with specific error (wrong length, bad checksum, unknown country code)
- Non-existent or unsupported country code prefix causes country check failure
- Malformed input (non-alphanumeric characters) may return a parse error
- Network timeout on the API call

## How this service works

Validate an IBAN offline against the ISO 13616 registry: country and length check, ISO 7064 MOD-97-10 checksum, BBAN extraction, durable audit receipt.

## Output

Returns a structured validation result indicating whether the IBAN is valid, the extracted country code, expected vs actual length check result, MOD-97-10 checksum pass/fail, the extracted BBAN (Basic Bank Account Number), and a durable audit receipt suitable for compliance logging.

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/lookups-nl-iban-validator-e10523d7/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from lookups.nl](https://www.zero.xyz/host/lookups.nl/llms.txt)