the402 endpoint detail

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gateway.apiosk.com financial-validation iban-country-check

https://gateway.apiosk.com/financial-validation/iban-country-check

answers 402

Validate an IBAN's format and mod-97 checksum, derive its country code, and optionally compare it to an expected country. Format/checksum/country only — no bank-account verification.

We sent a real POST request to this endpoint and it answered 402 with payment requirements we could parse.
Price
$0.05
Network
base
Pay to
0xA039E3dEb5ca71E41905f90491FC5d016CE23B79
Spec dialect
v2 (declares x402Version 2)
Transport
PAYMENT-REQUIRED header
HTTP method
POST
Response latency
663 ms
Payment options
1 usable of 1
Last checked
2026-08-15T14:35:00.284Z (4d ago)
Category
other

Re-check it yourself:
curl "https://api.the402.dev/validate?url=https%3A%2F%2Fgateway.apiosk.com%2Ffinancial-validation%2Fiban-country-check"