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Attorney General Nessel Launches Operation Robocall Roundup, Issues Warning Letters to 37 Telecom Companies
August 07, 2025
LANSING – Today, Michigan Attorney General Dana Nessel launched Operation Robocall Roundup, a multistate effort by the Anti-Robocall Litigation Task Force to crack down on robocalls across the country. As part of the initiative, Attorney General Nessel and 50 bipartisan attorneys general are sending warning letters to 37 voice providers demanding that they act now to stop illegal robocalls being routed through their networks.
“Operation Robocall Roundup will help ensure voice service providers do their part to stop illegal robocalls,” Nessel said. “I look forward to continuing to work with the Anti-Robocall Litigation Task Force to protect people from these persistent and intrusive calls.”
These providers haven’t complied with Federal Communications Commission (FCC) rules about responding to government traceback requests, haven’t registered in the FCC’s Robocall Mitigation Databases, or haven’t filed a plan that describes how they will reduce illegal robocalls on their network. By disregarding these simple rules, these companies are allowing robocallers onto their phone networks and then passing their calls on to other downstream providers until they reach the phones of Michigan residents.
The task force is also sending the letters to more than 100 downstream providers that accept call traffic from the 37 companies, so that they know they’re doing business with bad actors that are not willing to follow the rules that apply to everyone equally.
The FCC is also taking a close look at several of these companies. It announced yesterday that it will be removing seven of these providers from the Robocall Mitigation Database, which means that other providers will no longer be allowed to accept and route any calls from their networks.
The voice service providers receiving warning letters are:
- Advantage Investors LLC
- Alpha Stream
- Ananya Traders LLC
- Ariyan Khan
- BBT Voice Private Limited
- Belthrough
- BPO VoIP
- Collection 3 LLC
- Communications and Telephone Systems Co.
- Dial Vista Corp.
- DigitalOcean, LLC
- Dtel Network LLC
- End Zone Financial Services
- EON Telecom Inc.
- Family Communication Inc.
- Fiber Flux VOIP
- First Tele Communications Inc.
- Flow VOIP LLC
- Globe Tech Solutions
- Higher Response Marketing, Inc.
- HK KwaiFong Group Limited
- Infinity SIP LLC
- Lexico Telecom LTD / Lextel LTD
- Mexico IP Phones LLC
- Nexusphere VOIP LLC
- Pleedex LLC
- Quantum Link VOIP LLC
- Ringnition
- SK Teleco LLC
- SkyPulse VOIP
- Stacy Newsome LNCC LCC
- Telnextrix LLC
- Terra Voip
- TheVisionConnect
- Tiera Enterprises LLC
- Voip Torque
- Whisl Telecom, LLC / Telconus / Telcon US / Telcon Voice
In 2022, 51 attorneys general joined forces to create the Anti-Robocall Litigation Task Force. The Task Force investigates and takes legal action against companies responsible for significant volumes of illegal and fraudulent robocall traffic routed into and across the United States.
Copies of the warning letters are available here.
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