Köneürgenç

Khanate of Khiva de facto · 1789 – August 11, 1873 (from the border data)
Russian Empire de facto · 1873 – September 14, 1917 (from the border data)
Russia de facto · September 14, 1917 – November 7, 1917 (from the border data)
Russia de facto · December 6, 1917 – December 30, 1922 (from the border data)
Soviet Union de facto · December 30, 1922 – December 25, 1991 (from the border data)
Turkmenistan de facto · since December 26, 1991 (from the border data)