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 2020

The 2020 Robocall Investigation Report by TNS includes a vast amount of factual evidence derived from real network traffic over the last four years. The study is unique in that it offers an objective, first-hand view of robocalling, spamming and spoofing across the hundreds of carriers that signal across the TNS signaling and database routing infrastructure. 

To download the report click here.

STIR/SHAKEN Resources:

Click image to read an article in the November 2018 issue of Pipeline Magazine, Advanced Analytics to Combat Robocalling by Paul Florack.

Call Guardian STIR/SHAKEN Capabilities Information Sheet

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

Please select yes if you are happy for TNS to hold your data for future communication purposes.

By entering your personal information on this form and clicking on the “Submit” button, you are giving TNS permission to use the personal information you submit for the purposes set forth in our TNS Group Privacy Policy. California consumers: for information on the categories of personal information collected by TNSI and the purposes for which the collected personal information will be used, see our TNS Group Privacy Policy – USA [here].

TNS Telecom Division @TelecomTNS
5 hours ago

A bipartisan effort involving state Attorneys General across the country spearheaded by #NorthCarolina AG…


TNS Telecom Division @TelecomTNS
1 day ago

5G roaming subscribers to reach 147 million globally by 2025


  • 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