| Destination | Zone | Opérateur |
|---|---|---|
| Canada | USA Canada | TELUS Communications |
| Cap Vert | Travel |
CVMOVEL
T+ TELECOMUNICAÇÕES S.A. |
| Caraïbes | Europe | Orange CARAIBE |
| Chili | Travel |
CLARO (Chili)
ENTEL PCS Chili Telefonica Moviles Chile S.A. |
| Chine | Business |
CHINA MOBILE INTERNATIONAL LIMITED
CHINA TELECOM (CDMA) CHINA UNICOM (CHINA UNITED TELECOMMUNICATIONS) |
| Chypre | Europe |
Cytamobile - Vodafone
EPIC ltd (ex MTN CYPRUS ) PRIMETEL |
| Colombie | Travel |
Colombia Movil S.A. E.S.P. (Tigo)
Colombia Telecommunicaciones (ex Telefonica Moviles Colombia S.A.) COMCEL (Claro Colombie) |
| Congo | Travel | Airtel (ex-ZAIN CONGO S.A. Brazzaville) |
| Corée du Sud | Travel |
KT CORPORATION
LG U+ SK TELECOM |