Free BIN & IIN Lookup Tool

Instantly identify the issuing bank, card type, country, and more from any Bank Identification Number.

Enter the first 6–8 digits of any credit or debit card

4 lookups remaining today
100% Free Instant Results No Registration

Why Use CardBinCheck?

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

Instant Lookup

Get card details in milliseconds. Our optimised BIN database delivers fast, accurate results every time.

Global Coverage

Access BIN data from card issuers worldwide — Visa, Mastercard, Amex, Discover, JCB, UnionPay, 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.

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 comprehensive BIN database.

View Results

Instantly see the card network, issuing bank, country, card type, funding source, and more.

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.
  • Currency — The default currency associated with the card account.

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 to use. No registration or payment is required. You can perform multiple BIN lookups every day at no cost.

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 default currency.

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.

How accurate is this BIN checker?

Our BIN checker uses a comprehensive and regularly updated database, providing highly accurate results for the vast majority of active BINs worldwide. Data includes card scheme, issuing bank, country, currency, funding type, and card segment information.

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.