Euphrates Region, formerly Kobanî Canton, is the central of three original regions of the Autonomous Administration of North and East Syria, comprising Ayn al-Arab District of the Aleppo Governorate, Tell Abyad District of the Raqqa Governorate, and the westernmost tip of the Ras al-Ayn Subdistrict of the Ras al-Ayn District of Al-Hasakah Governorate. Wikipedia