With so many banks able to issue credit cards, it can be difficult to keep track of the ones that issued each of your cards. This can be a problem when you need to contact the bank to gather more information about the account connected to the card. However, the credit card number holds an identifier to help you locate the issuing bank.
Access an online bank identification number (BIN) database, such as BINDatabase.net, BINBase.com or BIN-IIN.com (see the Resources section). These directories list the banks that issue credit cards.
Enter the first six digits of the credit card number, which is the number imprinted on the front of the card, in the search field. Some directories require you to click the type of card rather than entering the number. In that case, numbers starting with "3" are from American Express, numbers starting with "4" are from VISA, numbers starting with "5" are from MasterCard and numbers starting with "6" are from Discover.
Click "Search" if you are using a directory that requires you to enter the first six digits. This will return the issuing bank. Search the list that returns if you are using a directory that requires you to select the type of card.