| Area | Code Number |
| Colombo | 011 |
| Jaffna | 021 |
| Mannar | 023 |
| Vavuniya | 024 |
| Anuradhapura | 025 |
| Trincomalee | 026 |
| Polonnaruwa | 027 |
| Negombo | 031 |
| Puttalam | 032 |
| Gampaha | 033 |
| Kalutara | 034 |
| Kegalle | 035 |
| Avissawella | 036 |
| Kurunegala | 037 |
| Panadura | 038 |
| Matara | 041 |
| Ratnapura | 045 |
| Hambantota | 047 |
| Hatton | 051 |
| Nuwara Eliya | 052 |
| Nawalapitiya | 054 |
| Badulla | 055 |
| Bandarawela | 057 |
| Ampara | 063 |
| Batticaloa | 065 |
| Matale | 066 |
| Kalmunai | 067 |
| Kandy | 081 |
