In 1998, Vega was named the best keeper of the Primera División youth ranks and one year later was listed in the Copa América 22–man squad of Venezuela national team by the Argentine coach José Omar Pastoriza. He made his international debut on 30 July 1999 against Brazil, in where his team lost 7–0, in a match that Ronaldinho realized a very well goal, who made an incredible dribbling that passed over the head of the centre back José Manuel Rey. Three seasons later, Renny was called–up by Richard Páez to the 2001 Copa América held in Colombia, not making an international appearance. In June 2007, was considered by Páez in an historic Copa América for his country, that was made at Venezuela.