A MasterCard has a total of 16 digits. MasterCard, as well as most major credit card systems, use the ANSI Standard X4.13-1983 system, in which each digit identifies a particular attribute of the card. .Continue Reading
The first digit on any credit card designates the particular system by which it was issued. For example, the MasterCard system is identified by the number 5, American Express and Diners Club credit card numbers start with the number 3, while Visa and Discover Card systems are identified by the numbers 4 and 6, respectively.
Each credit card number has a structure that varies by system. In the MasterCard system, digits two through six are used to identify the bank number, digits seven through 15 designate the account number and digit 16 represents a check digit.Learn more about Credit & Lending
Cancel a MasterCard by paying off the card and calling customer service or writing a letter to customer service, as indicated by eHow. Most financial institutions give MasterCard credit cards to their customers, and the process of cancelling the card is the same.Full Answer >
Activate your MasterCard by calling the telephone number on the activation sticker on the card's back or by using your personal identification number at any automatic teller machine, according to Santander Bank. Making a purchase using the card and the PIN also activates the card.Full Answer >
To register your MasterCard, making online purchases more secure, visit the MasterCard website, click on the Consumers tab, then hover your mouse on Explore Features and Benefits. On the pop-up menu that appears, hover on SecureCode, then click on the SecureCode Sign Up link.Full Answer >
MasterCard customer service representatives provide assistance for customers in the United States at 800-627-8372, according to the company's official website. At MasterCard.us, customers can also complete a web form to receive assistance via email and find answers to hundreds of the most frequently asked questions.Full Answer >