Written by
Sarah Delphey, VP of Trust Solutions
Rebekah Johnson, Founder & CEO
Published on
October 28, 2022
Updated on
August 15, 2025
In its October 27, 2022, Open Meeting the FCC discussed a proposed Notice of Inquiry (NOI) regarding the adoption of STIR/SHAKEN on non-IP networks.
According to the FCC, this Notice of Inquiry would:
Commissioners Carr, Starks, and Simington praised the NOI and said the industry needed to continue to take steps to combat illegal robocalls. Commissioner Starks said there was a need to push all providers to implement STIR/SHAKEN and continue facilitating service providers’ transition to all IP networks. Commissioner Simington commented on the age of US phone networks and that the current state of IP adoption is understandable but that combatting illegal calls through STIR/SHAKEN requires that service providers accelerate IP adoption or push for non-IP-based means to implement technology to combat illegal calls.
Chairwoman Rosenworcel reinforced the need to continue to innovate and be relentless in using existing tools to respond to new methods from scammers. Rosenworcel praised STIR/SHAKEN’s ability to allow consumers to trust that callers “are who they say they are” and its effectiveness on IP networks but said that STIR/SHAKEN does not work on networks that rely on traditional copper lines. Rosenworcel noted the Commission would not wait for service providers to update their networks and that the Commission would look to find new ways to address illegal calls on existing phone networks. Rosenworcel praised the Memorandums of Understanding the FCC has developed with state agencies and the Commission’s recent enforcement actions.
Citing the desire by illegal callers to look for “loopholes” in existing laws, Rosenworcel suggested that Congress needed to take action, including:
The NOI was approved unanimously and adopted by the Commission.
STIR/SHAKEN is a technology framework mandated by the FCC to combat illegal caller ID spoofing. It works by digitally verifying that the phone number sending a call is legitimate and authorized, allowing carriers to authenticate and validate calls before delivering them. This helps reduce robocalls and scam calls, improving trust in voice communication.
While STIR/SHAKEN authenticates that your calls are coming from your registered numbers, it does not guarantee that carriers or analytics platforms will automatically trust your calls. Calls can still be flagged as spam due to poor reputation, lack of verified identity, or previous misuse of numbers. Combining STIR/SHAKEN with a verified identity and proactive reputation management is essential to reduce spam labeling and ensure better call delivery.
Numeracle helps you prepare for STIR/SHAKEN compliance by verifying your business identity and managing your phone number reputation across carriers and analytics platforms. While we don’t sign calls directly, our Verified Identity and number registration services ensure carriers recognize you as a trusted caller, which complements STIR/SHAKEN’s call authentication to improve overall call delivery and reduce spam labeling.
STIR/SHAKEN is a mandated call authentication protocol that verifies the legitimacy of a phone number at the network level to prevent spoofing and illegal robocalls. It proactively stops fraudulent calls before they reach consumers. Number Reputation Management solutions, on the other hand, track and report when your numbers are flagged or labeled as spam but do not prevent spoofing or guarantee call authentication. While STIR/SHAKEN authenticates calls in real-time, reputation tools provide visibility into call blocking and labeling issues after the fact, with pathways to remediate.
