Actually, under a "covenantal" framework, they could be part of one or more covenants but excluded from one or more. So, "dispensationalism" could suggest it applied for a certain time, and " covenantal" could suggest it applied to a specific group of people.
In order to propose that the 10 commandment were given by God to all Christians, you have to dismiss the concept of dispensationalism. Conversely, in order to suggest that certain sections of scripture are intended only for a specific time period or group of people you have to embrace the concept of dispensationalism. It's a real dilemma.