The variety Red Bordeaux Blend in CellarTracker implies any blend using any or all of the five traditional Bordeaux varieties: Cabernet Sauvignon, Merlot, Cabernet Franc, Petit Verdot and Malbec. As such, this is used worldwide, whether for wines from Bordeaux, Meritages from California and Canada, some Super-Tuscan wines etc.
Read about the grapes used to produce Red and White Bordeaux