CUCM external number mask

Still working my way through CIPT1 so I'm not sure if I haven't reached the right section yet. But in a single or multi site deployment is it possible to set the external number mask on a DN range instead of an individual DN basis?
Site 1: DN range 1xxx DID range 92571xxx
Site 2: DN range 2xxx DID range 93542xxx
I know I could use BAT after the event and update things, but can it be set beforehand.
Site 1: DN range 1xxx DID range 92571xxx
Site 2: DN range 2xxx DID range 93542xxx
I know I could use BAT after the event and update things, but can it be set beforehand.
Comments
You can also set the calling party transform mask in the Route Pattern. Chances are you're going to have a full route plan setup for each location (in seperate partitions of course) so it’ll work there too.