To pay a MasterCard bill online, navigate directly to the provider's website. MasterCard is a credit card vendor used by many businesses, and is not responsible or capable of accepting payments for debts to these service providers.
If the MasterCard is physically present, then the service provider's contact information is recorded on either the back or the front of the card. Additionally, the telephone numbers, address and website are included on the billing statement. Many businesses give card holders the option of switching from paper billing statements to online bill pay exclusively, and it is also possible to set up automatic payment of MasterCard statements.