▣ FINANCE · STANDARD DATA

Advanced IBAN Validation API

What it does

IBAN Validator checks an International Bank Account Number and returns a simple validation response. Send an iban string and get back an envelope with success and code, plus any additional module blocks the service includes.

Use it when you need to confirm account numbers before payment initiation, onboarding, or bank-detail storage. It fits workflows where a frontend form, backend service, or support tool needs a quick yes/no validation result without parsing the IBAN format yourself.

The service also includes an IBAN Countries endpoint at /countries, which returns the same response envelope. Use it to retrieve the country-related IBAN reference data exposed by the API.

▣ ENDPOINT 01 / 02

GET

IBAN Validation

https://api.eu.apyhub.com/quadlem/iban-validation/iban-validate

QUICKSTART

GUIDE

Quickstart

Use the following request to validate an IBAN and retrieve associated banking, country, compliance, and risk information.

curl -X GET "https://api.eu.apyhub.com/quadlem/iban-validation/iban-validate?iban=DE89370400440532013000" \
  -H "apy-token: $APY_TOKEN"

What you'll get back

A successful request returns structured information about the IBAN, including its validity, bank details, country information, compliance checks, fraud signals, and confidence score.

{
  "success": true,
  "valid": true,
  "input": "DE89370400440532013000",
  "bank": {
    "name": "Example Bank",
    "bic": "EXAMPLEXXX"
  },
  "country": {
    "code": "DE",
    "name": "Germany",
    "currency": "EUR"
  },
  "sepa": {
    "is_sepa_country": true,
    "instant_payment": true
  },
  "compliance": {
    "fatf_status": "clean",
    "ofac_flag": false
  },
  "fraud_signals": {
    "risk_score": 0,
    "risk_level": "minimal"
  },
  "confidence": {
    "score": 85,
    "grade": "B"
  }
}

Note: The complete response also includes additional modules such as routing, payment_networks, fx, payroll_suitability, account_format, financial_stability, formatted, and other enriched metadata.

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API key

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The full key is used to call the gateway and stays in this tab — never sent to orbit or saved.

About this endpoint

What it does

Validates an IBAN and returns a full risk, routing, and compliance profile — checksum validation, bank identification, SEPA/SWIFT reachability, sanctions/FATF status, fraud and account-structure signals, and payroll/open-banking suitability.

Query Parameter(s)

Attribute	Type	Mandatory	Description
iban	String	Yes	The IBAN to validate.

Response

Returns a JSON object with the validation verdict and a set of modules describing the bank, country, SEPA reachability, compliance status, routing, and fraud signals.

Attribute	Type	Description
success	Boolean	Whether the request succeeded.
valid	Boolean	Whether the IBAN passed checksum/format validation.
input	String	The IBAN as submitted.
iban	Object	Normalized IBAN details (electronic/friendly format, length, check digits).
bank	Object	Bank identification (name, BIC, code, status).
country	Object	Issuing country (code, name, currency).
sepa	Object	SEPA reachability (credit transfer, direct debit, instant payment).
compliance	Object	Sanctions/FATF status.
routing	Object	Recommended payment method and settlement speed.
payment_networks	Object	Supported rails (SWIFT, SEPA, ACH, etc.).
fraud_signals	Object	Virtual/neobank flags and risk score.
account_signals	Object	Structural anomaly checks.
confidence	Object	Overall confidence score/grade.
formatted	Object	Display-ready IBAN and bank details block.
(+more)	Object	Additional modules: `correspondent_banking`, `regulatory`, `beneficiary_verification`, `open_banking`, `fx`, `direct_debit_rules`, `islamic_finance`, `central_bank`, `payroll_suitability`, `account_format`, `iban_recycling`, `swift_gpi`, `financial_stability`, `bank_history`.

▣ ENDPOINT 02 / 02

GET

IBAN Countries

https://api.eu.apyhub.com/quadlem/iban-validation/countries

QUICKSTART

GUIDE

Quickstart

Use the following request to retrieve the complete list of supported countries and territories.

curl -X GET "https://api.eu.apyhub.com/quadlem/iban-validation/countries" \
  -H "apy-token: $APY_TOKEN"

What you'll get back

A successful request returns the total number of supported countries along with details such as the country code, country name, currency, and flag.

{
  "success": true,
  "code": 200,
  "count": 250,
  "countries": [
    {
      "country_code": "DE",
      "country_name": "Germany",
      "currency": "EUR",
      "flag": "🇩🇪"
    },
    {
      "country_code": "US",
      "country_name": "United States",
      "currency": "USD",
      "flag": "🇺🇸"
    },
    {
      "country_code": "AQ",
      "country_name": "Antarctica",
      "currency": null,
      "flag": "🇦🇶"
    }
  ]
}

Note: The complete response includes all 250 supported countries and territories, each with its ISO country code, display name, currency (where applicable), and flag.

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API key

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The full key is used to call the gateway and stays in this tab — never sent to orbit or saved.

About this endpoint

What it does

Returns the full list of countries and territories supported for IBAN/ISO validation, along with each country's ISO code, name, currency, and flag emoji. Takes no parameters.

Query Parameter(s)

None.

Response

Returns a JSON object with the total number of supported countries and a countries array holding the code, name, currency, and flag for each.

Attribute	Type	Description
success	Boolean	Whether the request succeeded.
code	Integer	Numeric response code.
count	Integer	Total number of countries returned.
countries	Array	List of country objects.
countries[].country_code	String	ISO alpha-2 country code.
countries[].country_name	String	Country name.
countries[].currency	String or null	ISO currency code (null where not applicable, e.g. Antarctica).
countries[].flag	String	Flag emoji.

▣ COMMON ERRORS

Errors any endpoint can return

400bad_request

Required parameter missing or malformed body.

401unauthorized

API key missing, revoked, or not authorized for this service.

429rate_limited

Your plan's per-second rate exceeded. Retry with exponential backoff.

503upstream_busy

Backend temporarily unavailable. Try again in a few seconds.

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From the blog

Reads that touch this API.

The API Sprawl Problem in Ecommerce: How Teams Lose Time to Utility CodeAug 5, 2026 Beyond RapidAPI: 7 API Marketplaces That Actually Support AI Agents in 2026Aug 5, 2026 Validate IBAN API: IBAN Validation for Developers and Secure PaymentsJul 9, 2026 Data Validation APIs: What Your Checks Actually ProveSep 8, 2026