Orbits don't work that way.
First, many satellites share an orbit - for example, the whole GEO is a single orbital path, and it has hundreds, something like 25% of all the world's satellites spread over that path; and any junk that intersects that orbit is a threat to all of them, not any one in particular.
Second, a random piece of space junk is likely to be in a weird orbit where no satellite would want to be, but that potentially crosses/intersects many orbits where we would like to put satellites or have already done so, so again, it threatens many satellites (or "orbital slots"), not any one in particular. An orbit that's "clean" for this rotation might intersect a piece of space junk in the next rotation or a month afterwards; that junk is not "in that orbit" but it's still a threat to that orbit and many others because its path is crossing these orbits.
You could assign responsibility to sources of particular pieces debris; but there simply aren't cleanly separable areas of space for orbits to which you could assign responsibility like we do for radio spectrum.