If there wasn't a list, wouldn't it make more sense for NPS to need your home address information or your landline phone number as opposed to your cell phone?
That's what made me almost certain that Dish had shared my information with NPS.
The service address would be needed to verify which market, as well as to independently (i.e., non-Dish) validate eligibility to receive DNS.
Then each address would need a unique number in the database for quick sorting, retreival, and other functions. Since NPS and Dish claim to not be in concert with each other, they would not share account numbers. What's easier to go to a record in a database, a unique standard formated number - with 10 digits, such as a telephone number, or an address consisting of Street Number, Street Name, Lane, Street, Avenue, LN, ST, AVE, City, State, etc...?
So in the cell phone case, your service address is listed under a 10 digit reference number that corresponds to a cell phone number.
Hopefully it won't be too long before the dust settles and NPS is allowed to provide DNS via EchoStar birds, and then they can start adding DirecTV customers and non-Satellite customers who would like to activate a receiver strictly to receive Network Broadcasts in isolated places, like fishing camps down in the swamps, mountain cabins, or etc....
EDIT: But again, there were some info shared for select markets with a non-disclosure agreement.
