Point 20 is a territory of Malaysia
Only the continental shelf boundary has been determined between the two countries for this segment of their maritime border. The border follows the equidistant line between the baselines of Indonesia and Malaysia and Point 20 is the equidistant point between Indonesia, Malaysia and Vietnam (see table below).[16] Point 20 is the western terminus of the Indonesia-Vietnam continental shelf boundary which the two countries agreed to in 2003 and the easternmost point of the area of overlapping claims between Malaysia and Vietnam. [...] Point 25 is also the eastern terminus of the Indonesia-Vietnam continental shelf boundary which was agreed to by the two countries in 2003, making it the common tripoint of Indonesia, Malaysia and Vietnam. This is also the western terminus of the Malaysian continental shelf boundary in South China Sea as asserted in the country's 1979 territorial sea and continental shelf boundary map. The boundary is however not recognised by any other country.