API Bouncer

Buy me a coffee

IIN API

IIN API allows you to accurately identify the issuing bank, card type, country of origin, and other details from a credit or debit card number. This is essential for fraud prevention, payment processing, and customer verification.

FinanceAuth: API KeyHTTPS: YesCORS: yesStatus: alive

Last verified: November 12, 2026

Reliability

100% uptime: the documentation responded in 5 of 5 checks over the last 30 days. Median response time: 371 ms.

How we check, and the most reliable APIs →

Visit API →

At a glance

  • Authentication: API Key
  • HTTPS: Yes
  • CORS: Yes, callable from browser JavaScript
  • Documentation: https://iinapi.com
// Fetch the docs page with cURL curl https://iinapi.com

History

  • November 12, 2026: last health check, responding
  • November 2, 2026: Added to the directory (imported from marcelscruz)

See every change to the directory →

More Finance APIs

Looking for other Finance APIs? Here are more free options in the same category:

  • Aletheia — Insider trading data, earnings call analysis, financial statements, and more
  • Alpaca — Realtime and historical market data on all US equities and ETFs
  • AlphaAI — AI-enriched financial & insider-trading news, scored for relevance
  • Banco do Brasil — All Banco do Brasil financial transaction APIs
  • Bank Data API — Instant IBAN and SWIFT number validation across the globe
  • Banking Access Index — Which US business banking providers accept founders by country of residence, with sources
  • Bargo Congress Trades — U.S. House and Senate STOCK Act trade disclosures as JSON: ticker, member, chamber, transaction type, amount range and filing dates. Free key raises rate limits.
  • Billplz — Payment platform
  • Boleto.Cloud — A api to generate boletos in Brazil
  • Brainy Prices — UAE living costs: KHDA fees, DLD rents, fuel, utilities, telecom and relocation, with dated sources

View all Finance APIs →