1. AT&T Inc.
2. Bharti Airtel Limited
3. China Mobile Ltd.
4. China Telecom Corporation Limited
5. China United Network Communications Group Co. Ltd.
6. Claro Company
7. Deutsche Telekom AG
8. Digicel Group
9. KT Corporation
10. Lyca Mobile
11. MTN Group Limited
12. NTT Docomo Inc.
13. Orange International Carriers
14. PCCW Enterprises Limited
15. Reliance Jio Infocomm Limited
16. Saudi Telecommunication Company
17. Singapore Telecommunications Limited
18. Singtel Optus Pty Limited
19. Sprint Corporation
20. T-Mobile International AG
21. Telef?nica
S.A.
22. Telkom SA SOC Limited
23. Telstra Group Limited
24. Verizon Communications Inc.
25. Vodafone Idea Limited