C-Cube
C-Cube was a prepaid mobile phone tariff from the “Calling Card Company” in Austria . SIM cards from C-Cube only worked in the Austrian One network . C-Cube was a sub-tenant of the MVNO Tele2 and used its area code 0688. Thus, the calling card company in Austria also reached the mobile market for cheap calls abroad and advertised passively with calling card prices via the mobile phone with its own mobile number To be able to receive calls and SMS . C-Cube was the first provider on the Austrian mobile communications market to specialize in low-cost international telephony. C-Cube was only sold as a starter package with a SIM card.
The Calling Card Company's parent company was Tele2, which the company sold to the Italian telecommunications company Eutelia. After Telekom Austria took over the mobile communications division of Tele2, C-Cube had to cease operations in 2008. However, only fewer than 1,000 customers were affected.