343,000+ BINs · Unlimited Lookups

Free BIN Checker & IIN Lookup

Instantly identify the issuing bank, card network, country, and card type from any Bank Identification Number - free, unlimited, no sign-up.

First 6-8 digits of any card · Unlimited free lookups · 343,000+ BINs

100% Free Instant Results No Registration

Why Use CardBinCheck?

The most reliable free BIN lookup tool for verifying payment card details

Instant & Unlimited

Every lookup runs against our own database of 343,000+ BINs - no rate limits, no queues, results in milliseconds.

Global Coverage

BIN data from issuers worldwide - Visa, Mastercard, Amex, Discover, JCB, UnionPay, Maestro, and more.

Secure & Private

We only process the first 6-8 digits. No full card numbers are ever stored, logged, or transmitted.

Completely Free

No registration, no hidden fees, no credit card required. Use our BIN checker at zero cost, as often as you like.

How to Use the BIN Checker

Three simple steps to look up any BIN or IIN number

Enter the BIN

Type the first 6 to 8 digits of any credit or debit card into the search field above.

Click Lookup

Press the Lookup button or hit Enter to search our database of 343,000+ BINs.

View Results

Instantly see the card network, issuing bank, country, card type, and issuer contact details.

What Is a BIN / IIN Number?

Bank Identification Number (BIN)

A Bank Identification Number (BIN) consists of the first 6 to 8 digits of a payment card number. These digits uniquely identify the institution that issued the card. BINs are used by merchants, payment processors, and financial institutions to verify and route transactions correctly. Learn more about BIN numbers →

When you make a purchase online or in-store, the BIN is the first piece of data that gets processed. It tells the payment system which bank issued the card, what type of card it is (credit, debit, or prepaid), and which card network it belongs to (Visa, Mastercard, American Express, etc.).

Issuer Identification Number (IIN)

The term Issuer Identification Number (IIN) is the official designation defined by the ISO/IEC 7812 international standard. While "BIN" remains more commonly used in everyday industry language, IIN is the technically correct modern terminology. Both terms refer to the same set of leading digits on a payment card. Try our IIN Lookup tool →

What Information Does a BIN Reveal?

  • Card Network - Visa, Mastercard, American Express, Discover, JCB, UnionPay, etc.
  • Issuing Bank - The financial institution that issued the card.
  • Card Type - Credit, debit, or prepaid.
  • Card Level - Classic, Gold, Platinum, Signature, Business, Corporate, etc.
  • Country of Issue - The country where the card was issued.
  • Issuer Contact - Bank website and customer service phone, when available.

Common Uses of BIN Lookup

BIN checking is widely used in e-commerce, fraud prevention, payment processing, and financial analysis. Merchants use BIN data to validate transactions, detect potentially fraudulent activity, and ensure proper payment routing. It is also valuable for understanding customer demographics and optimising payment acceptance rates across different geographies.

Payment processors and gateways rely on BIN data to apply the correct interchange rates and determine whether a transaction qualifies for premium processing. Fraud teams use card number lookups to flag mismatches between a card's country of issue and the customer's billing or shipping address.

Frequently Asked Questions

Everything you need to know about BIN and IIN numbers

What is a BIN number?

A BIN (Bank Identification Number) consists of the first 6 to 8 digits of a payment card. These digits identify the card-issuing institution, card network (Visa, Mastercard, etc.), card type (credit, debit, prepaid), and other details. Read our full guide →

What is the difference between BIN and IIN?

BIN (Bank Identification Number) and IIN (Issuer Identification Number) refer to the same thing - the first 6-8 digits of a payment card. IIN is the official term defined by the ISO/IEC 7812 standard, while BIN is the older and more commonly used term in the payment industry. Learn more about IIN vs BIN →

How many digits are in a BIN number?

Traditionally, BIN numbers were 6 digits long. In 2022, the ISO standard was updated to extend BINs to 8 digits to accommodate the growing number of card issuers worldwide. Our tool supports both 6-digit and 8-digit BIN lookups.

Is this BIN checker free to use?

Yes, CardBinCheck.com is completely free with unlimited lookups. No registration or payment is required. Our database covers more than 343,000 BINs worldwide.

How many BINs are in the database?

Our database contains over 343,000 BIN records covering Visa, Mastercard, American Express, Discover, JCB, UnionPay, Maestro, Diners Club, and more, across virtually every country.

What information does a BIN lookup provide?

A BIN lookup reveals the card network (Visa, Mastercard, Amex, etc.), issuing bank or financial institution, card type (credit, debit, prepaid), card level (Classic, Gold, Platinum), country of issuance, and issuer contact details when available.

Is it legal to look up BIN numbers?

Yes, looking up BIN numbers is completely legal. BIN data is publicly available information used by merchants, payment processors, and fraud prevention systems worldwide. Only the first 6-8 digits are used, which do not identify any individual cardholder or account.

What are BIN numbers used for?

BIN numbers are used for transaction routing, fraud detection, payment validation, merchant analytics, and regulatory compliance. They help merchants verify that a card's country matches the customer's location and assist in detecting suspicious or high-risk transactions.