{
"input": "DE89370400440532013000",
"iban": "DE89370400440532013000",
"valid": true,
"format_valid": true,
"checksum_valid": true,
"country": "DE",
"country_code": "DE",
"country_known": true,
"check_digits": "89",
"bban": "370400440532013000",
"length": 22,
"expected_length": 22,
"parts": {
"bank": "37040044",
"account": "0532013000"
},
"problems": [],
"verified_with_bank": false,
"note": "Validates IBAN structure and check digits only. It does not confirm that the account exists."
}
curl --location --request POST 'https://zylalabs.com/api/13839/iban+validator+and+parser+api/31822/validate+iban' --header 'Authorization: Bearer YOUR_API_KEY'
--data-raw '{"iban":"DE89370400440532013000"}'
After signing up, every developer is assigned a personal API access key, a unique combination of letters and digits provided to access to our API endpoint. To authenticate with the IBAN Validator and Parser API simply include your bearer token in the Authorization header.
| Header | Description |
|---|---|
Authorization
|
Required
Should be Bearer access_key. See "Your API Access Key" above when you are subscribed.
|
No long-term commitment. Upgrade, downgrade, or cancel anytime. Free Trial includes up to 50 requests.
Validate IBANs against the ISO 13616 country length table and MOD-97-10 check digits, and parse them into bank, branch, and account parts.
What you get:
- POST /iban/validate — Validate a single IBAN and return its parsed parts.
- POST /iban/validate-batch — Validate up to 500 IBANs in one call and return a summary.
- GET /iban/countries — List supported country codes and expected lengths.
This is deterministic, dependency-free code running on a global edge network.
The POST /iban/validate endpoint returns a single IBAN's validation status, parsed account details, and any issues found. The POST /iban/validate-batch endpoint returns a summary of validation results for up to 500 IBANs, including individual results and any validation problems.
Key fields in the response include "valid" (IBAN validity), "format_valid" (format correctness), "checksum_valid" (MOD-97 check), "country" (country code), "parts" (bank and account details), and "problems" (any validation issues).
The response data is structured in JSON format. For individual validations, it includes fields like "input," "iban," and "parts." For batch validations, it provides a summary with each IBAN's validation status and associated problems in an array format.
The /iban/validate endpoint provides validation status, parsed account details, and potential issues for a single IBAN. The /iban/validate-batch endpoint offers similar information for multiple IBANs, including a summary of validation results.
Users can customize requests by sending specific IBANs in the body of the POST request for validation. For batch validation, users can include up to 500 IBANs in a single request, allowing for efficient processing of multiple accounts.
The API relies on the ISO 13616 standard for IBAN structure and validation rules. Data accuracy is maintained through adherence to this standard, ensuring that the validation process is consistent and reliable across supported countries.
Typical use cases include validating IBANs during online transactions, ensuring correct bank account details in financial applications, and verifying account information for compliance and fraud prevention purposes.
Users can utilize the returned data by checking the "valid" field to confirm IBAN validity, using "parts" to extract bank and account details, and addressing any issues listed in "problems" to ensure accurate financial transactions.
To obtain your API key, first sign in to your account and navigate to the API you want to use. From the API's Pricing section, choose a plan and complete the subscription process. Once subscribed, return to the API page and you will see your API Access Key displayed at the top of the documentation page. You can use this key to authenticate your requests.
You can’t switch APIs during the free trial. If you subscribe to a different API, your trial will end and the new subscription will start as a paid plan.
The free trial lasts for 7 days and allows you to make up to 50 API requests.
No, the free trial is available only once, so we recommend using it on the API that interests you the most. Most of our APIs offer a free trial, but some may not include this option.
Yes. If the API offers a free trial, you will see a "Free 7-Day Trial" option in its Pricing section. The trial lasts for 7 days and allows up to 50 API requests, enabling you to evaluate the API before subscribing to a paid plan.
Zyla API Hub is like a big store for APIs, where you can find thousands of them all in one place. We also offer dedicated support and real-time monitoring of all APIs. Once you sign up, you can pick and choose which APIs you want to use. Just remember, each API needs its own subscription. But if you subscribe to multiple ones, you'll use the same key for all of them, making things easier for you.
You can monitor your API usage through the response headers included with every request:
x-zyla-api-calls-monthly-used: Shows the total number of API requests you have used during the current billing period.
x-zyla-api-calls-monthly-remaining: Shows the number of API requests you have remaining for the current billing period.
Yes, you can cancel your subscription at any time. Simply go to the Pricing section of the API you're subscribed to and click the "Unsubscribe" button.
Please note that upgrades, downgrades, and cancellations take effect immediately. Once your subscription is canceled, access to the service will end immediately, regardless of any remaining API calls in your quota.
Please have a look at our Refund Policy: https://zylalabs.com/terms#refund