I get it, it's not particularly well phrased but it poses a question that I don't know the answer to.
HD it's not that simple, what altitude is classed as 'airspace' that you would need permissions for - obviously satellites don't count as they are in space - or do they? Is there a specified altitude that means you are a transitioning satallite whereby you wouldn't have to get relevant controller permission?
If you are a HD anyway, (a job I'd dream of) why are you wasting your time being pedantic, and dare I say it, a little harsh, about an innocent 'spotters corner' question?