Oi S.A.
America Movil
SA DE C.V.
Telefonica
S.A.
China Mobile Communications Group Co. Ltd
China Unicom (Hong Kong) Limited
China Telecom Corporation Limited
Bharti Airtel Limited
Reliance Jio Infocomm Ltd
Bharat Sanchar Nigam Ltd
Mahanagar Telephone Nigam Ltd
PJSC MegaFon
Rostelecom