Retailers in North America can sell Airtime refill for Viva Dominican Republic. Philadelphia, PA, February 09, 2010 -- Prepay Nation, a leading International Top Up (ITU) distributor in North America, is now connected to resell airtime for Viva, a wireless operator with a number of sophisticated product offerings in the Dominican Republic. By collaborating with Viva, Prepay Nation has enabled its retail partners in the United States and Canada to instantly refill the airtime for Viva’s subscribers ...