As far as I know there is no international agreement on this. Altitude can vary from 30Km to 160Km.
Most countries seem to claim somewhere between 70Km and 100Km as their airspace.
If someone has more details on this, it's very welcome.
Most countries seem to claim somewhere between 70Km and 100Km as their airspace.
If someone has more details on this, it's very welcome.
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.