Bharti Airtel
Hotmobile
Orange
Telecom Italia Sparkle
Bics
Ibasis
Oteglobe
Telstra
BT Group (British Telecom)
IDT
Roshan
Turkcell
Etisalat
Mada
Tata
Türk Telekom
HGC Global
Openserve (Telkom SA)
Telenor
Tsystems
References
Bharti Airtel
Hotmobile
Orange
Telecom Italia Sparkle
Bics
Ibasis
Oteglobe
Telstra
BT Group (British Telecom)
IDT
Roshan
Turkcell
Etisalat
Mada
Tata
Türk Telekom
HGC Global
Openserve (Telkom SA)
Telenor
Tsystems