I'm familiar with that. And the guy proposes 22Km as the limit. Besides, a lot has changed in the use of airspace and space in the last 8 years. Yet, I don't

I'm familiar with that. And the guy proposes 22Km as the limit. Besides, a lot has changed in the use of airspace and space in the last 8 years. Yet, I don't know of any authoritative source for the actual current claims of most countries.