Illinois is in the Central Time Zone in the United States of America (USA). US Central Standard Time (CST) is 6 hours behind Greenwich Mean Time (GMT-6).
Credit Card Account Number Verification - Card Type Identification. This page provides information about identifying a credit card type from a card number's numeric range and number of digits. First digit must be a 3 and second digit must be a 4 or 7. Valid length: 15 digits. First digit must be 3 and second digit must be 0, 6, or 8. Valid length: 14 digits. Valid length: 16 digits.
The Card Identification Number is an added security feature to help protect you against online fraud. It is a 3- or 4-digit number that appears on your credit or debit card, next to your regular card number. Because the Card Identification Number is non-embossed and therefore not printed on receipts, it helps ensure that someone cannot use your credit card information without having the card in hand.