The banks of codes in the cable/sat remotes are assigned by the actual cable/sat manufacturer, and codes for all devices on the market may not necessarily be available. Since the cable/sat companies assign those codes, you'd have to inquire with them to see if there are updated codes available.
I have a Samsung HT-BD1250T Home Theater System. Want to control power on/off with my Comcast Custom DVR 3 Device remote control. I need the 5 digit manufacturers setup code for the HT-BD1250T remote control.