States/Counties Bashkortostan 915 Chuvashiya 916 Kirovskaya Oblast’ 917 Mariy-El 918 Mordoviya 919 Nizhegorodskaya Oblast’ 920 Orenburgskaya Oblast’ 921 Penzenskaya Oblast’ 922 Permskiy Kray 923 Samarskaya Oblast’ 924 Saratovskaya Oblast’ 925 Tatarstan 926 Udmurtiya 927 Ul’yanovskaya Oblast’ 928