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.
Visa, MasterCard and Discover users. American Express users. The Credit Card Identification Number is the 3-digit number located on the back of your card, usually at the top of the signature strip. Look for the 4-digit number printed on the front of your card. Depending on which card you have, you'll find this number in small type above your credit card's main number on either the left or right side. We have implemented this security feature to protect you, the card holder.