On Earth, geo-synchronous orbit about the equator is 42,164 km from the center (which is about 35,000 km from the surface.)
In my comm class in college, the professor said that at an International Telecommunications Conference, he heard a representative from Tonga complain about how their territorial rights were being violated because these geo-synchronous satellites were in their air space (albeit about 35 thousand kilometers up.) Essentially the industrial powers' response was (paraphrasing wildly), "Yeah? So whaddya gonna do about it? Knock 'em down with sticks and rocks?"