Prepaid Phone Rates Where Can I Find A Prepaid Phone Card With Cheap Rates To The Following Contries?

Where can I find a prepaid phone card with cheap rates to the following contries? - prepaid phone rates

To be honest, it is very difficult to make a card that has to find my data. The specifications are as follows:

Call from the U.S. Vietnam (cell) China (cell), Japan (Cell), a South Korean ... (Cell)

On the same card

No credit card required prepaid mobile phone

No connection fee, maitainence in 1 minutes rounding Fees

10 cents or less per minute is recommended for each country ()

Any help would be very grateful.

Thank you,
Tim