1. Belgacom International Carrier Services SA by Proximus Group
2. China Telecom Global Limited
3. ClearSky Technologies Inc.
4. Comviva Technologies Limited
5. DIMOCO Europe GmbH by Tofane Global SAS
6. Global Message Services AG
7. Infobip Ltd.
8. LINK Mobility Group Holding ASA
9. Mavenir Systems Inc.
10. MessageBird B.V.
11. Mobiweb Limited
12. Monty UK Global Ltd
13. Plivo Inc.
14. Retarus GmbH
15. Route Mobile Limited
16. SAP SE
17. Sify Technologies
18. Sinch AB
19. Syniverse Technologies LLC
20. Tata Communications Limited
21. Telnyx LLC
22. Twilio Inc.
23. Tyntec
24. VoiceSage
25. Vonage Holdings Corp. by Telefonaktiebolaget LM Ericsson