said by kevinds:
Easist way to tell, is if you have full cable (tiers 1, 2, or 3) connect a TV to analog cable, and see if you can get the tiers channels. If you don't have Tiers 1, 2, or 3 you shouldn't be able to see the channels in analog either though.
This isn't quite right as there are a lot of steps to DNU. First the analogue Tier 1,2,3 channels have to be removed (they are already being sent in digital as well). Then if the CMTS equipment is ready, within a short period of time some of the channels can be re-purposed for additional internet tiers.