You may be thinking of Oman, which has an area of 309,500 square kilometers. The other country that is close is Poland, with 312,685 square kilometers of area.
The area of Véry is 11.74 square kilometers.
The area of Cornillé is 12.47 square kilometers.
The area of Vire is 22.5 square kilometers.
The area of Balones is 11.2 square kilometers.
The area of Vron is 20.67 square kilometers.
The area of Arcen is 11.47 square kilometers.
The area of Pals is 25.81 square kilometers.
The area of Aigne is 10.94 square kilometers.
The area of Viller is 7,270,000.0 square meters.
The area of Montaner is 19.13 square kilometers.
The area of Lviv Oblast is 21,833 square kilometers.