ATTORNEY GENERAL RAOUL PUSHES FEDERAL GOVERNMENT TO STRENGTHEN ‘KNOW YOUR UPSTREAM PROVIDER RULES’ TO COMBAT ILLEGAL ROBOCALLS

ATTORNEY GENERAL RAOUL PUSHES FEDERAL GOVERNMENT TO STRENGTHEN 'KNOW YOUR UPSTREAM PROVIDER RULES' TO COMBAT ILLEGAL ROBOCALLS

September 09, 2026

Chicago - Attorney General Kwame Raoul, as part of a bipartisan coalition of 49 attorneys general, is pushing the Federal Communications Commission (FCC) to strengthen its "Know Your Upstream Provider" (KYUP) requirements to help prevent scammers from using the U.S. phone network to make illegal robocalls. KYUP rules require voice service providers to ensure that they receive calls from legitimate and responsible providers and do not regularly pass through lots of illegal calls.

"Robocalls are more than a nuisance, with scam robocalls costing consumers billions of dollars last year alone. The FCC's protections are critical to supporting state efforts to address the problem," Raoul said. "I am calling on the FCC to strengthen the Know Your Upstream Provider rules and require providers to responsibly vet the sources of calls to avoid passing through illegal robocalls to consumers."

Phone calls get routed through a series of phone companies before they reach consumers' phones. The FCC requires all voice service providers to take reasonable measures to vet the phone companies that originate and route calls. However, some voice service providers fail to do so, allowing illegal robocalls onto the U.S. communications network. Last year, Americans received more than 29.6 billion scam robocalls and texts and lost nearly $2 billion to these scams.

Raoul and the attorneys general are asking the FCC to strengthen voice service providers' obligation to vet their upstream provider customers and to consistently require scrutiny and diligence in the implementation of STIR/SHAKEN, which is the framework of standards to ensure that a caller is placing calls from phone numbers that are not being spoofed.

In addition to what the FCC is already doing, Raoul and the attorneys general urge it to:

• Mandate five categories of baseline KYUP measures. The attorneys general are asking the FCC to demand that voice service providers collect more detailed and verified information from their upstream provider customers. The attorneys general also urge the FCC to require voice service providers to more thoroughly vet upstream providers' compliance with FCC rules, monitor those upstream providers regularly and refuse or end service to upstream providers that aren't following the law.
• Require additional triggers for KYUP monitoring. Right now, a voice service provider generally monitors or reviews information about, or the conduct of, their upstream provider customers when they are entering into or renewing an agreement with the upstream provider, or when they receive evidence that an upstream provider may be breaking the law. The attorneys general argue that the FCC should require upstream provider monitoring more regularly to help prevent bad actors from operating unchecked.
• Strengthen STIR/SHAKEN protections. STIR/SHAKEN is a framework developed to prevent caller ID spoofing. The FCC should ensure that providers are aware of and comply with their caller ID authentication obligations. The FCC should also make sure that these rules are being followed and applied similarly to and by everyone with the responsibility for making sure that a call is really coming from the number a consumer sees as the caller ID, regardless of where they are in the path of a call.
• Implement new rules quickly, establish enforcement penalties and require retention of KYUP data. The attorneys general ask that any rules to help cut down on illegal robocalls be implemented as soon as possible. They also support base penalties for providers that don't meet upstream provider monitoring requirements or violate STIR/SHAKEN. They are also asking the FCC to require voice service providers to collect and retain data related to KYUP verification and monitoring, so that this information will be available to law enforcement or attorneys general for future investigations.

Attorney General Raoul is part of the Anti-Robocall Multistate Litigation Task Force, which launched Operation Robocall Roundup in 2025.

In Phase 1 of the operation, the task force sent warning letters to 37 smaller voice providers that were disregarding their obligations to mitigate the origination and transmission of illegal and/or suspicious robocalls by failing to comply with certain baseline mandates from the FCC. Just two weeks ago, the FCC ordered six of those companies to fix their robocall protection issues or risk losing the ability to route any calls across the U.S. telephone network.

In Phase 2, the task force expanded its crackdown to four of the country's largest intermediate voice service providers. In July, the task force called on the FCC to strengthen its "Know Your Customer" rules to require phone companies to verify who is making calls using their networks and what kinds of business their customers are conducting. Also in July, the task force sent comments to the FCC, encouraging it to crack down on illegal robocalls by strengthening rules that would cut off scammers' access to legitimate phone numbers.

Attorney General Raoul is joined in signing this letter by the attorneys general of Alabama, Alaska, American Samoa, Arizona, Arkansas, California, Colorado, Connecticut, Delaware, District of Columbia, Georgia, Hawaii, Idaho, Indiana, Iowa, Kansas, Kentucky, Louisiana, Maine, Maryland, Massachusetts, Michigan, Minnesota, Mississippi, Missouri, Nebraska, Nevada, New Hampshire, New Jersey, New Mexico, New York, North Carolina, North Dakota, Ohio, Oklahoma, Oregon, Pennsylvania, Rhode Island, South Carolina, South Dakota, Tennessee, Utah, Vermont, Virginia, Washington, West Virginia, Wisconsin and Wyoming.