ANATEL's had a useful on-line system (in Portuguese) where the standard rates of all available carriers could be compared for the particular long-distance call one wants to place, but it was cancelled by 2013 March.
Anatel
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Anatel Br - Codes of Brazil +55 BR - Country Code for Mobile Phones and Whatsapp
Anatel Br - Codes of Brazil +55 BR - Country Code for Mobile Phones and Whatsapp
Anatel Brazil
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