How do you tell which bank a visa card belongs to by the card number?

To determine which bank a Visa card belongs to, you can look at the first six digits of the card number, known as the Issuer Identification Number (IIN) or Bank Identification Number (BIN). The IIN/BIN identifies the issuing bank or financial institution. Various online BIN databases and lookup tools can be used to find the corresponding bank based on these digits. However, be cautious with sensitive card information and ensure you're using secure and reputable sources.