I don't think you have much of a great selection for OTA in the Moncton, NB area. You should have the usual suspects from Moncton, CTV, CBC, SRC, Global. None are digital. You do have at least 3 DTV stations on the Maine/NB border. Two in Presque Isle, ME, and one in Calais,ME. But I don't think their signals will reach Moncton, NB.
Here is the FCC site for DTV. Just type in your Postal Code for the map.