Cambodia Code +855 and Area Code as below,
| Banteay Meanchey | +855 54 |
| Battambang | +855 53 |
| Kampong Cham | +855 42 |
| Kampong Chhnang | +855 26 |
| Kampong Speu | +855 25 |
| Kampong Thom | +855 62 |
| Kampot | +855 33 |
| Kandal | +855 24 |
| Kep | +855 36 |
| Koh Kong | +855 35 |
| Kratie | +855 72 |
| Mondolkiri | +855 73 |
| Pailin | +855 55 |
| Phnom Penh | +855 23 |
| Preah Vihear | +855 64 |
| Prey Veng | +855 43 |
| Pursat | +855 52 |
| Ratanakiri | +855 75 |
| Siem Riep | +855 63 |
| Sihanoukville | +855 34 |
| Stung Treng | +855 74 |
| Svay Rieng | +855 44 |
| Takeo | +855 32 |
| Udar Meanchey | +855 65 |
