Validate IBAN API

About Validate IBAN API

IBAN Validator is a single-endpoint API that checks whether a submitted string is a valid IBAN and returns the parsed bank account details. A POST request with an iban field returns either false for an invalid value, or an object containing the iban, a valid flag, country_code, sepa_country, bban, and printable_format.

The service is intended for gating payment forms, cleaning up stored banking details, and rejecting malformed international account numbers before they reach downstream systems. The country_code and sepa_country fields support branching logic for regional payment rules, and printable_format provides a formatted version of the account number for display to users.

It is designed for a narrow purpose: validating a single IBAN and returning only the fields defined in its response schema, making it suited to integration into checkout flows, onboarding steps, and back-office validation jobs. It is hosted on ApyHub and published as a verified listing on the platform.

Key features

• Validates whether a string is a properly formatted IBAN
• Returns parsed IBAN details including country code and BBAN
• Flags whether the IBAN belongs to a SEPA country
• Returns a printable, human-formatted version of the IBAN
• Single POST endpoint for easy integration into checkout or onboarding flows

Frequently asked questions