Brasil Telecom

1960 - 1998, 2015 - 2017




All the companies by State (Telemig, Embratel, Telesp, Telebrasília, CTBC, Telamazon, Telepar, etc.)

1996 - 2010, 1998 - 2009 (Central)


Brasil Telecom was born by the privatization of Telebrás

Oi​
2009 - 2016



2016 - present