IBAN Validator and Parser API

API ID 13839

Validate IBANs against ISO 13616 lengths and MOD-97 check digits, and parse them into bank, branch, and account parts.

API Documentation

Endpoints

Request
Validate a single IBAN, check its format and MOD-97 checksum, and return parsed account details and any problems.
Endpoint ID: 31822
POST https://zylalabs.com/api/13839/iban+validator+and+parser+api/31822/validate+iban
INPUT PARAMETERS

Validate IBAN — Endpoint Features

Object Description
Request Body Required Json

Free test requests remaining: 3 of 3.


INPUT PARAMETERS

API EXAMPLE RESPONSE
JSON
{
    "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."
}
Validate IBAN — CODE SNIPPETS

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"}'

    

API Access Key & Authentication

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.

Headers
Header Description
Authorization Required Should be Bearer access_key. See "Your API Access Key" above when you are subscribed.

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Overview

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.

IBAN Validator and Parser API FAQs

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.

General FAQs

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