IBAN Validator API

IBAN Validator checks an IBAN's mod-97 checksum, its length and format for the country, and national check digits where the country defines them. It returns whether the IBAN is valid, the country and the reasons it fails. Paid plans add the bank code, branch code and account number, the correct check digits and the SEPA flag.

The IBAN Validator API provides a simple, reliable way to integrate iban validator functionality into your applications. Built for developers who need production-ready iban validator capabilities without the complexity of building from scratch.

View API Details →

Available on:

async function callIBANValidatorAPI() {
    try {
        const params = new URLSearchParams({
            iban: 'GB29NWBK60161331926819'
        });

        const response = await fetch(`https://api.apiverve.com/v1/ibanvalidator?${params}`, {
            method: 'GET',
            headers: {
                'x-api-key': 'YOUR_API_KEY_HERE'
            }
        });

        const data = await response.json();
        console.log(data);
    } catch (error) {
        console.error('Error:', error);
    }
}

callIBANValidatorAPI();

curl -X GET "https://api.apiverve.com/v1/ibanvalidator?iban=GB29NWBK60161331926819" \
  -H "x-api-key: YOUR_API_KEY_HERE"

Get your API key: https://apiverve.com

📁 For more examples, see the examples folder

Choose your preferred programming language:

npm install @apiverve/ibanvalidator

View NPM Package → | Package Code →

dotnet add package APIVerve.API.IBANValidator

View NuGet Package → | Package Code →

pip install apiverve-ibanvalidator

View PyPI Package → | Package Code →

gem install apiverve_ibanvalidator

View RubyGems Package → | Package Code →

composer require apiverve/ibanvalidator

View Packagist Package → | Package Code →

dart pub add apiverve_ibanvalidator

View pub.dev Package → | Package Code →

implementation 'com.github.apiverve:ibanvalidator-api:1.0.0'

Package Code →

go get github.com/apiverve/ibanvalidator-api/go

Package Code →

• 🏠 API Home: IBAN Validator API
• 📚 API Reference: docs.apiverve.com/ref/ibanvalidator
• 📖 OpenAPI Spec: openapi.yaml
• 💡 Examples: examples/

The IBAN Validator API is commonly used for:

• Web Applications - Add iban validator features to your frontend or backend
• Mobile Apps - Native SDKs for Android development
• Automation - Integrate with n8n, Zapier, or custom workflows
• SaaS Products - Enhance your product with iban validator capabilities
• Data Pipelines - Process and analyze data at scale

All requests require an API key in the header:

x-api-key: YOUR_API_KEY_HERE

Get your API key: https://apiverve.com

Every APIVerve endpoint returns the same envelope — check status, then read data:

{
  "status": "ok",
  "error": null,
  "data": { ... }
}

A real response from the IBAN Validator API:

{
  "status": "ok",
  "error": null,
  "data": {
    "iban": "GB29NWBK60161331926819",
    "isValid": true,
    "formatted": "GB29 NWBK 6016 1331 9268 19",
    "countryCode": "GB",
    "countryName": "United Kingdom",
    "checkDigits": "29",
    "expectedLength": 22,
    "length": 22,
    "errors": [],
    "bban": "NWBK60161331926819",
    "bankCode": "NWBK",
    "branchCode": "601613",
    "accountNumber": "31926819",
    "nationalCheckDigits": null,
    "expectedCheckDigits": "29",
    "isSEPA": true,
    "isQRIBAN": false,
    "checks": {
      "country": true,
      "length": true,
      "format": true,
      "checksum": true,
      "nationalCheckDigits": null
    }
  }
}

• 🏠 API Home: IBAN Validator API
• 💬 Support: https://apiverve.com/contact
• 🐛 Issues: GitHub Issues
• 📖 Documentation: https://docs.apiverve.com
• 🌐 Website: https://apiverve.com

We welcome contributions! Please see CONTRIBUTING.md for guidelines.

For security concerns, please review our Security Policy.

This project is licensed under the MIT License - see the LICENSE file for details.

Built with ❤️ by APIVerve

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