DirecTV, Net Uno, Intercable and Telefónica received all orders from Venezuela's government agency Conatel to block CNN. (DirecTV and CNN are both owned by AT & T.)
A BBC spokesman told CNN that the BBC Global News had also been blown up in the South American country.
CNN.com, however, remained online in the country.
A CNN spokesman had no comment.
This is not the first time that CNN has been blocked in Venezuela.