| No. | Area | Area Name |  |
| 01 | A | Eastern Hokkaido | |
| 02 | B | Western Hokkaido | |
| 03 | C | Northern Tohoku | |
| 04 | D | Southern Tohoku | |
| 05 | E | Northern Chubu | |
| 06 | F | Southern Chubu | |
| 07 | G | Northern Kanto | |
| 08 | H | Southern Kanto | |
| 09 | I | Eastern Tokai | |
| 10 | J | Western Tokai and Kinki | |
| 11 | K | Chugoku | |
| 12 | L | Shikoku and Setouchi | |
| 13 | M | Northern Kyushu | |
| 14 | N | Southern Kyushu |