The FCC’s Enforcement Bureau (Bureau) released a Final Determination Order and Removal Order (Order) for Belthrough LCC (Belthrough), finding that Belthrough failed to comply with FCC rules requiring voice service providers to investigate and mitigate suspected illegal robocall traffic. See also News Release.
Despite issuing a Notification of Suspected Illegal Traffic in September 2025 and an Initial Determination Order in February 2026, the Bureau found that Belthrough: (i) failed to meaningfully respond; (ii) failed to report the results of any investigation; and (iii) continued transmitting suspected illegal robocalls tied to campaigns impersonating internet service providers, financial institutions, and border protection services. Because Belthrough failed to address the suspected illegal traffic or cooperate with the FCC’s investigation, the Bureau determined that Belthrough violated section 64.1200(n)(2) of the FCC’s rules governing mandatory call blocking.
As a result, the Bureau ordered that all providers immediately downstream from Belthrough must block and cease accepting its traffic within 30 days of the Order’s release, and may initiate blocking sooner if they determine that Belthrough failed to mitigate illegal traffic or failed to implement effective measures to prevent new and renewing customers from using its network to originate illegal calls.
The Bureau also removed Belthrough from the Robocall Mitigation Database (RMD) because the company’s failure to cooperate contradicted its certification, made under penalty of perjury, that it would assist the FCC in investigating illegal robocalls. Removal from the RMD requires all voice service and intermediate providers to stop accepting calls directly from Belthrough within two business days of the Order’s release, and Belthrough may not refile in the database unless both the Enforcement Bureau and the Wireline Competition Bureau approve.
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