1. 8x8 Inc.
2. Amazon Web Services Inc.
3. Askozia by 3CX GmbH
4. AT&T Inc.
5. Atlantech Online Inc.
6. BullsEye by Lingo Management
7. Charter Communications Operating
LLC
8. Cisco Systems Inc.
9. ClearlyCore
10. Comcast Corporation by Xfinity
11. Consolidated Communications
12. Google LLC by Alphabet Inc.
13. InterGlobe Communications Inc.
14. Intermedia.net Inc.
15. International Business Machines Corporation
16. Junction Networks Inc.
17. Microsoft Corporation
18. Mitel Networks Corp.
19. NEC Corporation
20. Nexge Technologies (P) Limited
21. Nextiva
22. NovoLink Communications Inc.
23. RingCentral Inc.
24. Salesforce Inc.
25. SAP SE
26. Star2Star Communications
27. TELESYSTEM
28. U.S. TelePacific Corp. dba TPx Communications
29. Verizon
30. Vonage America
LLC
31. Xiamen Yeastar Information Technology Co. Ltd