Deuteronomy 3:4-5 NIV

4 At that time we took all his cities.1 There was not one of the sixty cities that we did not take from them--the whole region of Argob, Og's kingdom2 in Bashan.3

References for Deuteronomy 3:4

      5 All these cities were fortified with high walls and with gates and bars, and there were also a great many unwalled villages.