1. Accenture PLC
2. Asia Pacific Telecommunications Co. Ltd.
3. AT&T Inc.
4. Bharat Sanchar Nigam Limited
5. Bharti Airtel Limited
6. BT Group PLC
7. Cellnex Telecom
S.A.
8. Challenge Networks Resources Pty Ltd. by Vocus Group Limited
9. China Broadcasting Network International Co. Ltd.
10. China Mobile Limited
11. China Telecom Corporation Limited
12. Cisco Systems Inc.
13. Deutsche Telekom AG
14. DISH Network Corporation
15. du by Emirates Integrated Telecommunications Company PJSC
16. Emirates Telecommunications Group Company PJSC (e&)
17. International Business Machines Corporation
18. Jordan Telecom Group (Orange Jordan)
19. KDDI Corporation
20. KT Corporation
21. Mobile Telecommunications Company Saudi Arabia (Zain KSA)
22. NTT Group
23. Oman Telecommunications Company SAOG
24. One Communications Ltd.
25. One NZ New Zealand Limited
26. Ooredoo Group
27. Reliance Jio Infocomm. Ltd.
28. Saudi Telecom Company
29. SK Telecom Co. Ltd.
30. Taiwan Mobile Co. Ltd.
31. Telef?nica
S.A.
32. Two Degrees Mobile Limited
33. Verizon Communications Inc
34. Viettel Military Industry and Telecoms Group
35. Vodafone Group PLC
36. ZTE Corporation