Yes it is! You can use this BIN lookup tool via API. Documentation available here.
Unlike other tools, our BIN look up is and always will be completely free. No rate limits either!

A BIN (also known as an IIN) is the first 6 or 8 digits of a credit/debit card. It indicates what bank has issued the card, as well as additional information on the card itself. For more information check out an article here.

For merchants, knowing the BIN of the card can be very helpful for fraud detection purposes. If the card BIN is for an issuer in the United States, however the IP of the cardholder is in Zimbabwe, it is more likely to be a fraudster. Distance from issuing bank to cardholder is a common metric used by fraud prevention tools such as Stripe's Radar for Fraud Teams.

We have obtained the BIN data from a variety of highly reliable sources, including datafeeds obtained directly from issuing banks. This ensures our BIN lookup provides the most up to date and robust look up data. We currently have over unique 300,000 BINs covered.

Our BIN data is updated on a realtime basis as additional issuers send us updated card data. Our core product allows us to send pre-dispute notifications which includes data involving issuer banks.
Unlike other services, our data is not a static table of card prefixes (which would be unreliable).

Visa	400115
Mastercard	529128
Amex	324000
Discover	651572