Brazil has changed the rules around the requirement to specify an operator for domestic long distance calls several years ago: https://gizmodo.uol.com.br/anatel

Brazil has changed the rules around the requirement to specify an operator for domestic long distance calls several years ago: https://gizmodo.uol.com.br/anatel-aprova-ligacoes-de-longa-distancia-de-telefone-fixo-sem-codigo-da-operadora/ https://gizmodo.uol.com.br/anatel-aprova-ligacoes-de-longa-d... (link in Portuguese)