What part of Earth's mantle is near the outer core?

The Earth comprises:-

1. Continental crust: depth of 0-75 kilometres: Oceanic crust: depth of 0-10 kilometres
2. Upper mantle: depth of 10-400 kilometres
3. Transition region: depth of 400-650 kilometres
4. Lower mantle: depth of 650-2,890 kilometres
5. D" layer: depth of 2,700-2,890 kilometres
6. Outer core: depth of 2,890-5,150 kilometres
7. Inner core: depth of 5,150-6,370 kilometres