When a digital data transmission such as a digital television transmission is received by a receiver (100), the receiver attempts to locate parental rating data for a program in the transmission for a home country or jurisdiction (105, 220) in which the receiver is located. If the home jurisdiction rating data is available, it is used to control blocking of the program (270). If the home jurisdiction rating data is not available, rating data is obtained from the transmission for a foreign jurisdiction to control blocking of the program (270). If ratings for multiple foreign jurisdictions are available, the highest, most strict rating (240), may be used to control blocking of the program.