CNT was founded on March 15, 1979 by entrepreneur and politician José Carlos Martinez as a local station called TV Tropical, originally affiliated to Rede Globo until it was sold to Diários Associados in 1980.

Televisa's other productions came as Sueños y caramels, SOS: Sexo y otros Secretos and ¿Y ahora qué hago?.

With broadcasters themselves, affiliates and repeaters, CNT based network to a program of national scope in recent years working from five strategic poles: Rio de Janeiro, São Paulo, Salvador, Brasília and Curitiba.

The stations comprising the network receive programming in digital quality using Embratel satellite channeling.

CNT Esporte reached a record of 1.1% share on January 17, 2024, yet despite receiving donations from viewers, it doesn't surpass its average.