Turkey BIN IBAN TCKN Validator API

Overview

All-in-one Turkish financial validation. Validate IBANs, look up card BINs, verify TC Identity Numbers and Tax IDs. All offline - instant response, zero external dependencies. Bilingual support via ?lang=tr or ?lang=en.

Authentication

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Endpoints

GET /v1/finance/iban/validate?iban=TR330006100519786457841326

Validates a Turkish IBAN with MOD97 checksum. Returns bank name, branch code, formatted IBAN. Supports 50+ Turkish banks.

{
  "is_valid": true,
  "iban": "TR330006100519786457841326",
  "formatted": "TR33 0006 1005 1978 6457 8413 26",
  "bank_code": "0006",
  "bank_name": "Unknown",
  "branch_code": "10051",
  "checksum_valid": true
}

GET /v1/finance/bin/lookup?bin_number=454360

Looks up card issuer from first 6-8 digits. Returns bank, card type, scheme, level.

{
  "bin": "454360",
  "found": true,
  "bank": "Is Bankasi",
  "card_type": "Credit Card",
  "scheme": "VISA",
  "level": "Classic",
  "country": "Turkey"
}

GET /v1/finance/tckn/validate?tckn=10000000146

Validates 11-digit TC Identity Number using official MOD10 double-check algorithm. Instant, offline.

GET /v1/finance/vkn/validate?vkn=1234567890

Validates 10-digit Tax ID using official modular check algorithm. Instant, offline.

Supported Banks (IBAN Detection)

Ziraat, Halkbank, VakifBank, Is Bankasi, Akbank, Yapi Kredi, Garanti BBVA, QNB Finansbank, Denizbank, TEB, ING, Sekerbank, HSBC, Kuveyt Turk, Turkiye Finans, Albaraka Turk, Ziraat Katilim, Vakif Katilim, Emlak Katilim, and 30+ more.

Supported Banks (BIN Lookup)

Is Bankasi, Yapi Kredi, Akbank, Garanti BBVA, Halkbank, VakifBank, Ziraat, QNB Finansbank, Denizbank, TEB, ING, Sekerbank, Kuveyt Turk, Turkiye Finans, Albaraka Turk. Covers VISA, Mastercard, Troy, and Amex schemes.

Use Cases

Payment gateway checkout validation
E-commerce card form pre-fill
KYC/AML identity verification
Accounting software VKN validation
Banking integrations

Support

support@turkapi.tr | https://turkapi.tr