1947 was founded Empresa Nacional de Telecomunicaciones
through a merger of Marconi Wireless Telegraph and Radio (Telegrafia) Nacional.
1950 the company became Telecom
following another merger with Empresa de Radiocomunicaciones.
1991 Liberalization of the Columbian Telecom market.
2003 Empresa Nacional de Telecomunicaciones -Telecom replaced by
Colombia Telecomunicaciones (Colombia Telecom)
2006 the privately owned Spanish Telefonica acquired 50% of Columbia Telecom
Telefonica Telecom now renamed Telefonica.co
can be considered as the historic operator of Columbia,
now a joint venture between the state of Columbia
and the private Spanish Telefonica.
1884 was founded in Bogota
La Compañia Colombiana de Telefonos (CTC)
which was later acquired by the Bogota city council
renaming it ETB
the Empresa de Telecommunicationes de Bogota
With the arrial of GSM
new operators appeared in the country