| C | |
| CAMBODIA |
00 855 |
| CAMEROON |
00 237 |
| CANADA | 00 1 |
| CAPE VERDE | 00 238 |
| CAYMAN ISLANDS | 00 1 345 |
| CENTRAL AFRICAN REPUBLIC | 00 236 |
| CHAD | 00 235 |
| CHILE | 00 56 |
| CHINA | 00 86 |
| COLOMBIA | 00 57 |
| COMOROS | 00 269 |
| CONGO | 00 242 |
| COOK ISLANDS | 00 682 |
| COSTA RICA | 00 506 |
| CROATIA | 00 385 |
| CZECH REPBULIC | 00 420 |