Is it a Bird or a Plane? It’s the Robocall Task Force!

Wednesday, December 3, 2025
Contact: (916) 210-6000, agpressoffice@doj.ca.gov

Attorney General Bonta continues waging war on robocalls — announces investigation of four major voice service providers, gives update on ongoing robocall enforcement efforts

OAKLAND — California Attorney General Rob Bonta today announced Phase 2 of Operation Robocall Roundup, a multistate, bipartisan effort by the Anti-Robocall Litigation Task Force to crack down on robocalls around the country. As part of this phase, Attorney General Bonta and 51 attorneys general have sent warning letters to four of the largest voice service providers in the U.S., demanding they immediately take action to stop illegal robocalls from being routed through their networks. In August, Attorney General Bonta and the Task Force commenced Phase 1 of Operation Robocall, sending warning letters to 37 smaller voice providers that were allowing suspected illegal robocalls onto the U.S. telephone network — an effort that has already delivered results. Phase 2 targets companies with far larger footprints in the U.S. telecom ecosystem. As larger providers, these companies have a heightened responsibility to decline call traffic from known and repeat bad actors. Despite extensive industry traceback notices and years of documented warnings, these four providers continue to route suspected illegal robocalls onto the network and into American homes. 

“Robocalls disrupt our lives and bombard us with never ending voicemails — for many Californians, robocalls are a daily, if not an hourly, source of frustration. These calls aren’t just annoying, in many cases they are illegal and a vehicle for harmful scams that can result in real financial losses for consumers. This is a nationwide problem, and we need nationwide solutions,” said Attorney General Bonta. “I am proud to continue in this national, bipartisan effort to protect consumers from unwanted robocalls by launching Phase 2 of Operation Robocall Roundup. The four companies targeted today are continuing to transmit millions of suspected illegal robocalls. My office is committed to protecting Californians and tackling illegal robocalls that plague our phones, disrupt our days, and threaten our wallets.” 

The four providers targeted in today’s operation (see chart below) have been directed to stop transmitting suspected illegal robocalls across their network. By disregarding notices and warnings meant to protect consumers, these companies have allowed robocalls onto their phone networks and have then passed these calls on to other downstream providers until they reach the phones of Californians. The chart below includes data points illustrating the suspected illegal robocall activity of each of the four service providers targeted today, including the estimated number of Social Security Administration (SSA) and Internal Revenue Service (IRS) imposter calls which these companies allowed on their networks.

Operation Robocall Roundup Phase 2: Scope of Suspected Illegal Robocall Activity

Provider

Total Traceback Notices (since 2019)

Estimated Amazon/Apple Imposter Robocalls (3-year period*)

Estimated SSA/IRS Imposter Robocalls (3–4-year period*)

Inteliquent          9,712         450 million              1.425 billion
Bandwidth          3,060         162.7 million              301 million
Peerless          5,662         210.7 million              585.3 million
Lumen          7,265         261.5 million              886.2 million

*for specific time periods, please see the warning letters linked above.

Operation Robocall Phase 1 is Delivering Results:

After sending warning letters to 37 companies in August, the Task Force saw rapid, measurable changes:

  • 13 companies were removed from the FCC’s Robocall Mitigation Database, meaning no provider in the United States may accept their call traffic.
  • 19 companies stopped appearing in any traceback results, indicating they ceased routing suspected illegal robocalls.
  • At least four providers terminated high-risk customer accounts identified as transmitting illegal traffic.

The Anti-Robocall Multistate Litigation Task Force of 51 bipartisan attorneys general investigates and takes legal action against those responsible for routing significant volumes of illegal robocall traffic into and across the United States.

Attorney General Bonta is committed to enforcing consumer protections in the state of California and speaking out for consumer protections nationwide, including working to a stop to illegal robocalls. In April, Attorney General Bonta put nine companies on notice for submitting illegal robocall traffic. And in March, he submitted an amicus brief in support of a FCC rule which would have limited unwanted robocalls and robotexts by closing a loophole that bad-acting lead generators try to use to trick a consumer into “consenting” to calls from potentially thousands of companies.

As part of the effort to combat illegal robocall traffic Attorney General Bonta has: 

  • Sent warning letters to four telecom companies for transmitting suspected illegal robocall traffic on their networks — including robocalls that impersonated government officials or involved scams.
  • Submitted a comment letter to the FCC in support of its proposed rules to protect consumers by increasing the effectiveness of the FCC’s Robocall Mitigation Database.
  • Sent a warning letter to a telecom company responsible for transmitting suspected illegal robocall traffic, including robocalls that impersonated government officials. 
  • Sent a warning letter to a company that allegedly sent New Hampshire residents scam election robocalls during the New Hampshire primary election. 
  • Filed a comment letter to the FCC related to the potential impact of emerging artificial intelligence (AI) technology on efforts to protect consumers from illegal robocalls or robotexts. 

Additionally, the California Department of Justice is involved in ongoing litigation against Avid Telecom for allegedly initiating and facilitating billions of unlawful robocalls that included Social Security Administration scams, Medicare scams, and employment scams.   

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