BIN Checks: Why One Service Accepts a Card and Another Doesn't

BIN (Bank Identification Number) is the first six digits of a card number. Based on these digits, a service determines the issuing bank, country of issue, and card type (debit/credit/prepaid). And based on this same data, it may decline payment—even when the card has sufficient balance and 3DS authentication was successful.

When BIN Gets in the Way

Regional restrictions. Some services—especially US airlines, insurers, and government services—only accept cards issued within their jurisdiction. A foreign BIN will immediately result in a decline.

Prepaid ban. Subscription services with high chargeback risk (e.g., mobile operators) may block prepaid and virtual cards because it's harder to recover funds from them in case of debt.

Acquirer antifraud. If a particular BIN has been involved in many disputed transactions, the merchant may temporarily block it—without even notifying any of the issuers.

How to Check in Advance

The simplest way is to try paying a minimal amount (e.g., $1 as a tip) on the service's page. If the charge goes through, the BIN is accepted, and you can proceed with the full amount. If declined, the card won't work.

There are open BIN databases (binlist.net, bincodes.com) that show which bank and country a number belongs to. However, these databases cannot tell you whether a specific merchant accepts that BIN—that decision lies with the acquirer.

What to Do When Declined

Do not attempt payment again—after three declines, many services temporarily block the card altogether. Instead, try a different payment method, then contact the service's support and ask which BINs they accept. Sometimes a decline is not because "the card is bad" but because "it was issued in an unsuitable country"; this can be resolved simply by using another card or a different payment method.