Activate a MasterCard by calling the toll-free number from the sticker on the front of your card. The activation system is automatic, so listen carefully to the instructions.
Enter or say the full card number displayed on the front of your card when prompted. Enter or say the expiration date. Enter or say the three-digit CVC security number on the reverse of your card to continue to activate your MasterCard.
Answer a personal question that only you would know to verify your identity. This may include the last four digits of your social security number, your date of birth or the full address where the card is registered. Your MasterCard will be activated and ready to use.