Call Guardian STIR/SHAKEN Capabilities

Robocalling Epidemic

The FTC received 4.5 million robocall complaints in 2017, up from 3.4 million the prior year. Robocall bad actors continue to adjust their strategy to elude detection. The time is now to improve your subscribers’ call experience.


STIR and SHAKEN use digital certificates, based on common public key cryptography techniques, to ensure the calling number of a telephone call is secure. STIR/SHAKEN will identify Caller ID spoofing, a common technique used by robocallers, by authenticating the Caller ID at the origination point of the call, then validating this Caller ID at the termination point. Operators can use STIR /SHAKEN, in conjunction with Call Guardian real-time analytics, to determine the validity and intent of a call.

Regulators are increasingly applying pressure to carriers to solve the robocalling problem. In the US, FCC Chairman Pai sent letters to 11 voice providers asking those that had not yet established concrete plans to implement the Signature-based Handling of Asserted Information Using toKENs (SHAKEN) framework and the Secure Telephone Identity Revised (STIR) standards to implement such standards without delay. In Canada, the CRTC has mandated deployment of STIR/SHAKEN by March 2019.

Deployment Options

  • TNS Call Guardian Authentication Hub 
  • Pre-SHAKEN/STIR solution that authenticates calls originating from networks that use TNS Managed Call Guardian Authentication Hub
  • Full STIR/SHAKEN solution on-premise
  • Carrier deployed STIR/SHAKEN solution – ingestion of verstat parameter into Call Guardian analytics engine

TNS Robocall Report March 2022

The data, convention and trends that plague consumers’ phones daily

We analyzed over 1.5 billion daily call events across hundreds of carriers to get an objective, first-hand view of robocalling, spamming and spoofing.

Did you know …?

  • Robocalls were slightly up in 2021
  • COVID-19 pandemic highlights need for branded calling
  • Tier-1 carriers continue to be a small part of the problem
  • Robocallers are crossing over to robotexts
  • VoIP originated calls are the largest portion of unwanted
  • Wireline phone numbers overlooked as robocaller target, while much of the attention is focused on robocalls to mobile numbers

The eighth edition of the TNS Robocall Investigation Report includes a deep analysis of where robocalls are made and by whom, a look at the newest robocall scams, a deep dive into robotexting, exciting details on the best industry solutions, and much more.

To download the report click here.

Robocall Mitigation Program

Download our Robocall Mitigation Program document and find out how to be compliant with the TRACED Act.

To download the report click here.

STIR/SHAKEN Resources:

Read our Identity and Protection blog posts to stay up to date with all the latest STIR/SHAKEN information. 

Click here to read the blog.

Call Guardian STIR/SHAKEN Capabilities Information Sheet

Sign up and get our product information sheet for Call Guardian STIR/SHAKEN Capabilities today.

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TNS Telecom Division @TelecomTNS
2 days ago

The @FCC recently reminded small voice providers that the deadline to adapt anti-robocall compliance is fast approa…


TNS Telecom Division @TelecomTNS
3 days ago

@Reuters explores the impact of fraud and #robocalls after the pandemic. To learn more about how to protect yoursel…


  • Sprint is proud to be partnering with TNS and Cequint to deliver best-in-class robocall identification to improve the experience of our customers. This technology provides a scientific and accurate way of offering a robocall protection solution that integrates seamlessly with our Premium Caller ID service.

    Mark Yarkosky, Director Product Management, Sprint

Details of your local TNS representative can be found on our contact page