| City | City Code |
|---|---|
| Cheju | 64 |
| Cholla bukdo | 63 |
| Cholla namdo | 61 |
| Chungchong bukdo | 43 |
| Chungchong nambdo | 41 |
| Inchon | 32 |
| Kangwondo | 33 |
| Kyonggido | 31 |
| Kyongsangbukdo | 54 |
| Kyongsangnamdo | 55 |
| Kwangju | 62 |
| Pusan | 51 |
| Seoul | 2 |
| Taugu | 53 |
| Taejon | 42 |
| Ulsan | 52 |
| Mobile Phones | 11,130,131 16-19 |
