IBAN Validator API

What does the IBAN Validator API do?

The IBAN Validator API checks whether a submitted IBAN is structurally valid for its country, including length rules and the MOD-97 checksum algorithm used in SEPA and global banking workflows. Integrate it into onboarding forms, payment rails, or back-office data cleanup jobs to catch invalid account numbers before they reach your core banking provider. The API returns clear validation status fields so you can branch UI flows and reduce failed payment attempts.

Use cases

• SEPA payment validation in fintech applications
• Banking SaaS onboarding and KYC forms
• Invoice and e-invoicing compliance checks
• Bulk customer record normalization

Code examples

Replace endpoint paths and hosts with the values shown in your RapidAPI subscription dashboard.

cURL

curl -X GET "https://iban-validator3.p.rapidapi.com/validate?iban=DE89370400440532013000" \
  -H "X-RapidAPI-Key: YOUR_RAPIDAPI_KEY" \
  -H "X-RapidAPI-Host: iban-validator3.p.rapidapi.com"

Node.js (fetch)

const response = await fetch("https://iban-validator3.p.rapidapi.com/validate?iban=DE89370400440532013000", {
  headers: {
    "X-RapidAPI-Key": process.env.RAPIDAPI_KEY,
    "X-RapidAPI-Host": "iban-validator3.p.rapidapi.com"
  }
});

const data = await response.json();
console.log(data);

Python (requests)

import requests

response = requests.get(
    "https://iban-validator3.p.rapidapi.com/validate?iban=DE89370400440532013000",
    headers={
        "X-RapidAPI-Key": "YOUR_RAPIDAPI_KEY",
        "X-RapidAPI-Host": "iban-validator3.p.rapidapi.com",
    },
)
print(response.json())

Response schema

{
  "iban": "DE89370400440532013000",
  "valid": true,
  "country": "DE",
  "checksum_valid": true
}

Pricing

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FAQ