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402utils.com v1 iban-check
https://402utils.com/v1/iban-check
payable
Validate an IBAN structurally before you pay or store it: ISO 7064 mod-97 check digits plus the official per-country length and BBAN layout (~90 countries), returning the bank/branch/account breakdown for FR, DE, ES, IT, BE and NL. Structural validation only — no BIC directory lookup (SWIFT's BIC registry is proprietary) and no proof the account exists. Local, instant. ?attest=1 → Ed25519-signed.
We sent a real
GET request to this endpoint and it
answered 402 with payment requirements we could parse.
- Price
- $0.001
- Network
- base
- Pay to
- 0xc55A2D530b53CBaD1001e4AfD4720B7E71f9C291
- Spec dialect
- v2 (declares x402Version 2)
- Transport
- PAYMENT-REQUIRED header
- HTTP method
- GET
- Response latency
- 11 ms
- Payment options
- 1 usable of 1
- Last checked
- 2026-08-10T09:15:16.589Z (1d ago)
- Category
- search
Re-check it yourself:
curl "https://api.the402.dev/validate?url=https%3A%2F%2F402utils.com%2Fv1%2Fiban-check"