Anatel orders TIM to block caller spoofing and trace calls

Brazil's telecommunications regulator Anatel issued six precautionary measures on Wednesday, 16 September 2026, targeting call spoofing. The regulator ordered Brazilian telecom operator TIM to block the call origination capacity of ELO Contact Center on its network for one month.

Anatel cited three inspection reports that uncovered 5,287, 672,379, and 1,080,513 spoofed calls tied to ELO Contact Center. TIM has up to five days from notification to implement the block, and it must submit evidence of routes, trunks, access points, numbering ranges, and the start date. The sanction can be lifted if all calls originated by ELO on TIM's network are authenticated.

The watchdog also ordered TIM to trace 2,141,428 calls routed across an interconnection link with international firm US Matrix between 27 May and 15 June 2026. TIM has up to 30 days to deliver call-by-call CSV files detailing network entry routes, technical evidence, and the legal identification of the originator or carrier.

If operators fail to identify the originators, Anatel warned it could block the routes and interconnections used by the investigated traffic. Operators must explain any inability to identify sources, report non-cooperating partners, and disclose any contractual penalties applied.