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Marcin Gondek
Deutsche Telekom AG
Level 3 Parent, LLC
SURF B.V.
TDC Holding A/S
Telekomunikasi Indonesia (PT)
Swisscom (Schweiz) AG
Dimension Data
Administracion Nacional de Telecomunicaciones
DIGI ROMANIA S.A.
Bharti Airtel Limited
PJSC "Vimpelcom"