I can answer this question.
Just to clarify the distinction between registration and subscription, registration is free, and there is a clear obligation for each telemarketer or client of a telemarketer to register with the DNCL operator, which is Raymond Chabot Grant Thornton LLP.
Basically, a subscription means downloading the list, paying to access the do-not-call list. You can access the valid phone numbers of people who have made a clear choice not to be contacted, and you can access it by downloading the list. You need, first, to be registered, and then you pay for the subscription.
That is the main distinction between the two.
I don't know if it answers your question.