Ibaraki
| Higashiibaraki District, Ibaraki | 029 |
| Higashiibaraki District, Ibaraki | 02955 |
| Hitachi, Ibaraki | 0294 |
| Hitachinaka, Ibaraki | 029 |
| Hitachiōta, Ibaraki | 0294 |
| Inashiki District, Ibaraki | 0297 |
| Inashiki District, Ibaraki | 0298 |
| Inashiki District, Ibaraki | 0299 |
| Ishioka, Ibaraki | 0299 |
| Iwai, Ibaraki | 0297 |
| Kasama, Ibaraki | 0296 |
| Kashima District, Ibaraki | 0291 |
| Kashima District, Ibaraki | 0299 |
| Kashima District, Ibaraki | 0478 |
| Kashima, Ibaraki | 0299 |
| Kitaibaraki, Ibaraki | 0293 |
| Kitasouma District, Ibaraki | 0297 |
| Koga, Ibaraki | 0280 |
| Kuji District, Ibaraki | 0294 |
| Kuji District, Ibaraki | 02957 |
| Makabe District, Ibaraki | 0296 |
| Mito, Ibaraki | 029 |
| Mitsukaido, Ibaraki | 0297 |
| Naka District, Ibaraki | 029 |
| Naka District, Ibaraki | 0292 |
| Naka District, Ibaraki | 0294 |
| Naka District, Ibaraki | 02955 |
| Namegata District, Ibaraki | 0291 |
| Namegata District, Ibaraki | 0299 |
| Namegata District, Ibaraki | 0478 |
| Niihari District, Ibaraki | 0298 |
| Niihari District, Ibaraki | 0299 |
| Nishiibaraki District, Ibaraki | 0296 |
| Nishiibaraki District, Ibaraki | 0299 |
| Ryūgasaki, Ibaraki | 0297 |
| Sashima District, Ibaraki | 0280 |
| Shimodate, Ibaraki | 0296 |
| Shimotsuma, Ibaraki | 0296 |
| Taga District, Ibaraki | 0293 |
| Takahagi, Ibaraki | 0293 |
| Toride, Ibaraki | 0297 |
| Toride, Ibaraki | 0471 |
| Tsuchiura, Ibaraki | 0298 |
| Tsukuba District, Ibaraki | 0297 |
| Tsukuba, Ibaraki | 0298 |
| Ushiku, Ibaraki | 0298 |
| Yūki District, Ibaraki | 0296 |
| Yūki District, Ibaraki | 0297 |
| Yuki, Ibaraki | 0296 |
Read more about this topic: List Of Dialing Codes In Japan