Know your customer, fight fraud

Card IIN and BIN Lookup and Verification

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Speedy support

We are renowned not only for our API but also for the fanatical support we provide to our customers.

Never limited

At IINAPI we exist to make your life easier and decrease development time, for this reason we do not impose arbitrary API usage rate limits.

Pay as you go

Paying for more than you consume is unfair, we do not operate like that. You will never be asked to pay for more API calls than you place, guaranteed.

Detect fraudulent users

The time when a client's signature could be used as proof of a genuine transaction are sadly long gone. That is not to say you do not have the ability to fight fraud; by using a combination of IINAPI and our User Agent API over at you can build a comprehensive view of your customer and whether or not the transaction will bring you increased revenue or headaches.


Whitelist your API key

The security of our service, API, and customer information is treated with the utmost sincerity. To illustrate our dedication to security consider our web API, which has been designed from the ground up to provide the perfect balance between usability, responsiveness, and top-notch security. Make use of our optional IP address whitelisting feature to ensure only your authorised servers can consume our API using your key.

A simply RESTful API

Let's keep it simple. Consumption of our API can be perform with a single and standard HTTP GET request with an appended API key. All output is provided in Json format and API call logs maintained to allow usage audits. The API is so simple there is little need for documentation, however we have put together a full and comprehensive API documentation page for all of our valued customers.


Simply Honest Pricing

API Usage and billing tariff calculator.

How many IIN lookups do estimate you will require per month?
API Calls Price Per Call Total Price
0 - 50 Free -
51 - 250 $0.005 -
251 - 1000 $0.0048 -
1001 - 5000 $0.0035 -
5001 - 10000 $0.0031 -
10001 - 50000 $0.0029 -
Any Additional $0.0025 -

Our Promise

Every customer receives
Volume discounts
The more you use, the more you save
Pay as you go
Pay only for what you use
No long-term contracts
NET30 Billing cycle, cancel anytime
Honest pricing
No hidden fees, just one fully featured plan.


In the event that you cannot find the answer to your question below, please visit our help section.

Q. What is an IIN/BIN number?

A. The Issuer Identification Number (IIN) or Bank Identification Number (BIN) are the first 4 to 6 digits of a credit card number that identify the card issuer and other related meta data.

Q. What can I use the API for?

A. Our API is used for many purposes - applications range from fraud detection and prevention to customer analytics and forecasting future trends. Knowing about credit card's IIN (Issuer Identification Number) also known as BIN (Bank Identification Number) is extremely helpful in fraud detection/prevention, especially for online transactions. For example, if an online buyer IP address is from Spain or he wants his purchase shipped to Colombia but the credit/debit card's BIN shows that the card was issued in the US, that might be a very reliable red flag indicator of fraud or a stolen credit card.

Q. Is it safe to use

A. We follow industry best practises to protect your privacy and to ensure the security of our service and API, in addition we do not store your payment details on our servers.

Q. How often is the information updated?

A. Although our service is not perfect, our BIN and IIN databases are updated on a regular basis to ensure we serve only the most up-to-date and accurate information to our customers.

Questions? We've got the right answers

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