FCC Cuts SK Teleco’s Access to U.S. Voice Networks
The Montana-based provider failed to respond to requests tied to suspected illegal robocalls, the agency said.
WASHINGTON, June 15, 2026 – The Federal Communications Commission has ordered U.S. voice providers to stop carrying traffic from SK Teleco.
The FCC’s Enforcement Bureau said in a release Friday it was removing the Missoula, Mont.-based voice service provider from the agency’s Robocall Mitigation Database, a step that effectively cuts off a provider’s ability to exchange traffic with other U.S. voice networks. The removal comes after SK Teleco failed to respond to investigations into suspected illegal robocalls.
Voice service providers must stop accepting the company’s traffic within 30 days, though providers may choose to start blocking calls as early as 48 hours after initiating, consistent with FCC rules.
In 2025, the Industry Traceback Group traced several Walmart impersonation calls to SK Teleco. The ITG notified SK Teleco of these calls, providing the data for each impersonation call, compelling the company to respond to traceback requests within 24 hours.
SK Teleco did not contest this and certified with the FCC’s Robocall Mitigation Database that it would cooperate with the FCC and ITG to investigate and stop any illegal robocallers that use the service to originate calls. However, the voice service company failed to respond.
SK Teleco failed to respond to traceback requests from the ITG for each of the calls, leading to a violation of its RMD filing that the company would respond within 24 hours to traceback requests to cooperate with the FCC and ITG.
As a result, SK Teleco is being removed from the RMD, cutting off its ability to send calls throughout the U.S. The company must seek prior approval from the FCC’s Enforcement and Wireline Competition Bureau before re-filing a certification.
“Today’s enforcement action shuts down another rogue provider that has consistently failed to police its network and protect customers,” said FCC Chief of the Enforcement Bureau Patrick Webre.
The Robocall Mitigation Database is designed to prevent robocalls by ensuring providers are combating robocalls and implementing STIR/SHAKEN caller ID verification. To enter the database, companies must certify that STIR/SHAKEN is implemented in all IP-based portions of their networks by submitting robocall mitigation plans.
The FCC has significantly updated rules around the database since its creation in 2021. Last August, the FCC announced it removed over 1,200 non-compliant voice service providers from the Robocall Mitigation Database.
“Eliminating fraudulent robocalls demands industry-wide cooperation, meaning every telecom provider must actively police and take responsibility for traffic on their networks,” Webre said. “The FCC is aggressively intensifying its crackdown on illegal robocalls by deploying new, advanced tactics across the telecom landscape.”
