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Deutsche Telekom AG
GTT Communications Inc.
SURF B.V.
CLARO S.A.
Telekomunikasi Indonesia (PT)
Dimension Data
Administracion Nacional de Telecomunicaciones
DIGI ROMANIA S.A.
HGC Global Communications Limited
Telefonica del Peru S.A.A.
SEACOM Limited
PJSC "Vimpelcom"