Prepaid Virtual Credit Card

I need a credit card to pay for something online from a site that I have not dealt with before - if I wanted a safe way to pay. Can you tell me any cheap instant virtual prepaid credit / debit cards? Please provide addresses if you have.
Thank you!

My MasterCard and Discover offer virtual account numbers.
virtual debit cards luxurious appearance, the second link

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Currently, we know of two credit card issuers who offer this service: Citibank and Discover Financial Services. MBNA Corp. and others may also offer this service (although we could not find a public link).

For more information, visit:

Citibank (virtual account numbers)

Map (Discover Deskshop).
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I've been wondering about this as well and found an article explaining how the virtual debit cards work: (http://ecommerce.suite101.com/article.cfm/understanding_the_virtual_debit_card). Report Abuse