| Country | Town/City | Telephone code |
| Tanzania | Arusha | +255 27 |
| Tanzania | Dar Es Salaam | +255 22 |
| Tanzania | Dodoma | +255 26 |
| Tanzania | Iringa | +255 26 |
| Tanzania | Kagera | +255 28 |
| Tanzania | Kigoma | +255 28 |
| Tanzania | Kilimanjao | +255 27 |
| Tanzania | Lindi | +255 23 |
| Tanzania | Mara | +255 28 |
| Tanzania | Mbeya | +255 25 |
| Tanzania | Morogoro | +255 223 |
| Tanzania | Mtara | +255 23 |
| Tanzania | Mtwara | +255 23 |
| Tanzania | Mwanza | +255 28 |
| Tanzania | Pemba | +255 24 |
| Tanzania | Pwani | +255 23 |
| Tanzania | Rukwa | +255 25 |
| Tanzania | Ruvuma | +255 25 |
| Tanzania | Shinyanga | +255 28 |
| Tanzania | Singida | +255 26 |
| Tanzania | Tabora | +255 26 |
| Tanzania | Tanga | +255 27 |
| Tanzania | Zanzibar | +255 24 |
