Measure valid from November 15th and affects around 350 entities that make more than 500 thousand calls per month
Telecommunications companies will have to identify, from November 15th, the connections of around 350 entities that make more than 500 thousand calls per month.
The companies had requested a longer period for adaptation, in an appeal that was denied by the (National Telecommunications Agency). Read the full text published on Tuesday (4.Nov.2025).
According to the case’s rapporteur, counselor Edson Holanda, “the big callers who will be affected by the measure […] generate a large number of calls on the networks” e “the authentication solution is now ready for availability”. Therefore, according to him, the 90 days granted were an adequate period.
Holland also decided to maintain the optional nature of the prefix 0303, stating that “the return of the non-geographic code 303 may favor the problem we are trying to combat, which is changing the caller’s number”.
With the agency’s new regulations, providers must:
- respect business hours;
- observe a reasonable number of connections destined for each consumer;
- provide adequate treatment to complaints related to unwanted calls;
- not make calls to consumers who, through specific platforms, have chosen not to receive them.
It constitutes inappropriate conduct on the part of providers to make massive calls:
- carried out in a volume exceeding the human capacity for service and communication;
- without the intention of effective communication (just to check if the number is active);
- that make it unduly difficult to identify the caller;
- for access codes of users who have chosen not to receive this type of call.
According to Anatel, the agency based its operations on 3 fronts:
Reduction in the number of calls:
- 2019: Do Not Disturb Me;
- 2022: Call blocking precautionary measure;
- 2024: Validation of registration (number x CPF);
- 2025: Expansion of the NMP.
More transparency for those receiving calls:
- 2021: prefix 0303;
- 2023: Which Company Called Me.
Fighting fraud:
- 2024: monitoring and blocking spoofing (commercial caller identification number replacement);
- 2025: origin verified.
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