The Area Codes of Mongolia: City/Town or RegionArea code 1.Ugtaal2765 (+976 2765) 2.Ulaan-Uul3855 (+976 3855) 3.Ulaanbaatar1 (+976 1) 4.Ulaanbadrakh5251 (+976 5251) 5.Ulaangom city452 (+976 452) 6.Ulaankhus4252 (+976 4252) 7.Uliastai city462 (+976 462) 8.Urgamal4658 (+976 4658) 9.Uulbayan5151 (+976 5151) 10.Uyanga3256 (+976 3256) 11.Üyench4353 (+976 4353)