I still don't think that's a useful identification. At most there will be a yearly contract, but no prior or subsequent contract is really required: any house with a phone line and a computer in it theoretically has net access, even if they aren't using it.

I mean, last week our household had ownership of a Cinnamon Whirl. But I ate it on Saturday so now we don't own one. :-D It's possible that in future we will rejoin the ranks of the Cinnamon Whirl Owning households, but the change is probably too evanescent to be transcribed in governmental documentation....