The Area Codes of Russia:
| City/Town or Region | Area code | |
|---|---|---|
| 1. | Kaliningrad Oblast | 401 (+7 401) |
| 2. | Kaluga Oblast | 484 (+7 484) |
| 3. | Kamchatka Krai | 415 (+7 415) |
| 4. | Kemerovo Oblast | 384 (+7 384) |
| 5. | Khabarovsk Krai | 421 (+7 421) |
| 6. | Khanty-Mansi Autonomous Okrug | 346 (+7 346) |
| 7. | Kirov Oblast | 833 (+7 833) |
| 8. | Kostroma Oblast | 494 (+7 494) |
| 9. | Krasnodar Krai | 861 (+7 861) |
| 10. | Krasnodar Krai | 862 (+7 862) |
| 11. | Krasnoyarsk Krai | 391 (+7 391) |
| 12. | Kurgan Oblast | 352 (+7 352) |
| 13. | Kursk Oblast | 471 (+7 471) |