Signed Call Traffic Gap Between Tier-1 and Smaller Carriers Undermining Robocall Mitigation Gains
Top US telecom providers’ robocall mitigation efforts continue to yield positive signed call traffic results, as 85% of all traffic between these Tier-1 carriers was signed in 2025, and 93% of these were signed with the highest “A-level” attestation.
However, TNS’ 2026 Robocall Investigation Report tells a different story for smaller carriers. Read the report to learn more about:
- The low levels of signed call traffic between smaller operators.
- Why slow progress in modernizing from legacy TDM to SIP networks creates vulnerabilities.
- How bad actors’ tactics are making calls signed with “A-level” attestation less easy to trust.
- The growth in multimodal and AI scam attacks.
Request a Translation of the Full Year Robocall Investigation Report
Request a translation of our Full Year Robocall Investigation Report in Japanese, Italian and Spanish (ES and MX).
Japanese
業界を明確にして、FCCが引用するロボコール調査レポートの日本語版をご請求ください。
Italian
Richiedi la tua copia in italiano del nostro Rapporto investigativo sulle chiamate robotiche che illustra il nostro settore ed è menzionato dalla FCC.
Spanish (ES)
Solicite su copia de nuestro Informe de investigación de robollamadas en español, que define el sector y ha sido citado por la FCC.
Spanish (MX)
Solicite una copia en español de nuestro Informe de investigación de llamadas automatizadas que define la industria y ha sido citado por la FCC.
Why TNS Data is Different
Most organizations are only capable of reporting within narrow data silos in what has always been a deeply complex infrastructure of line types, customer profiles and traffic patterns. It’s important to understand why decision-makers continue to value and prioritize the findings in TNS’ reports.
Media Interviews
Are you a member of the media who is interested in finding out more about TNS’ robocall data, scam trends or telecom industry developments? Contact us to arrange an interview with one of our experts.
Robocall Scam of the Month
With our unique visibility into over 1.5 billion daily call events collected from over 500 operators, our Scam of the Month page provides the information you need to help protect your subscribers from robocall bad actors.
With our unique visibility into over 1.5 billion daily call events collected from over 500 operators, our Scam of the Month page provides the information you need to help protect your subscribers from robocall bad actors.
International Scam Watch
At TNS, we have extended our coverage and visibility beyond the US and Canada to other key international markets. From caller ID spoofing to Wangiri “one ring” scam calls, contact us to find out how we can help protect your network from fraudulent activity.
At TNS, we have extended our coverage and visibility beyond the US and Canada to other key international markets. From caller ID spoofing to Wangiri “one ring” scam calls, contact us to find out how we can help protect your network from fraudulent activity.
Protect Your Customers
Did you know 87% of Americans believe that the businesses they use should do more to protect consumers? Take the first step in restoring trust in voice calling and find out more about TNS’ innovative solutions available to enterprises.
Did you know 87% of Americans believe that the businesses they use should do more to protect consumers? Take the first step in restoring trust in voice calling and find out more about TNS’ innovative solutions available to enterprises.
Modernize the Voice Channel
Next generation communications start with restoring trust in voice calling. With 30 years of call identification experience, TNS is a leading force in advanced call analytics, robocall detection, spoof protection and branded calling technology.
Deploy the latest technology for carriers and enterprises
TNS Call Guardian®
Our Call Guardian solution helps empower your subscribers by providing call validation and treatment to arm them with the information needed to help identify risky or malicious activity.
TNS Enterprise Authentication and Spoof Protection
Enterprise Authentication gives you the confidence that only verified calls are allowed to reach your customers, with Spoof Protection immediately blocking non-authenticated calls from using your number.
TNS Enterprise Branded Calling
Enterprise Branded Calling displays rich brand information on incoming call screens, such as name and logo, so consumers can discern legitimate calls from malicious ones.
Request a Copy
Fill out the form to request a copy of our industry defining and FCC cited Robocall Investigation Report.
