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STI-GA Enhances STIR/SHAKEN Functionality to Authenticate Broader Range of Calls

STI-GA Enhances STIR/SHAKEN Functionality to Authenticate Broader Range of Calls

A major advance in the industry-driven work to mitigate illegal robocalling.

The Secure Telephone Identity Governance Authority (STI-GA) today announced the launch of new STIR/SHAKEN functionality, expanding caller ID authentication reach with the use of delegate certificates and by allowing Resp Orgs, the companies responsible for assigning toll-free telephone numbers, to directly join the SHAKEN ecosystem. The new software launches on October 22.

Delegate certificates, as defined in an ATIS standard, are optional tools designed to help providers better determine the proper level of “attestation” for a call, or a caller’s right to use a certain phone number. Determining this right is one of STIR/SHAKEN’s most important contributions. A call receives the top level of attestation (A-level) only if the service provider signing it can identify the end user and attest to their right to use that telephone number for outbound calls.

In preparation for the launch, the STI-GA has extensively tested the effectiveness of this new solution by working with iconectiv, the organization that serves as the STI-Policy Administrator, as well as a number of service providers, Resp Orgs and industry vendors.

Broadening STIR/SHAKEN applicability by adding this new functionality arms consumers with increased confidence that the number displayed on their caller ID is from a party with the legitimate right to use the phone number and that phone number has not been “spoofed.” Learn more at


About the STI-GA

Operating under the auspices of ATIS, the Secure Telephone Identity Governance Authority (STI-GA) is the industry-led effort to support the timely deployment of the STIR/SHAKEN protocol and framework. The STI-GA Board consists of representatives from the following stakeholders:

  • Chair – Linda Vandeloop, AT&T
  • Vice Chair – Glenn Clepper, Charter Communications; appointed by NCTA – The Internet & Television Association
  • Clinton Lee, Jackson Energy Authority; appointed by the America’s Communications Association
  • Nathan Sutter, Nex-Tech Wireless; appointed by the Competitive Carriers Association
  • Indra Chalk, T-Mobile; appointed by CTIA
  • Greg Rogers, Bandwidth; appointed by INCOMPAS
  • Dave Frigen, Wabash Communications; appointed by NTCA – The Rural Broadband Association
  • Philip Linse, Lumen; appointed by US Telecom
  • Gunnar Halley, Microsoft; appointed by the VON Coalition
  • Michael Starkey, QSI Consulting, Inc.; appointed by Western Telecommunications Alliance and TEXALTEL
  • Tim Kagele, Comcast
  • Darah Franklin, Google

About ATIS

As a leading technology and solutions development organization, the Alliance for Telecommunications Industry Solutions (ATIS) brings together the top global ICT companies to advance the industry’s business priorities. ATIS’ 150 member companies are currently working to address 6G, 5G, robocall mitigation, IoT, Smart Cities, artificial intelligence-enabled networks, distributed ledger/blockchain technology, cybersecurity, emergency services, quality of service, billing support, operations, and much more. These priorities follow a fast-track development lifecycle – from design and innovation through standards, specifications, requirements, business use cases, software toolkits, open source solutions, and interoperability testing.

ATIS is accredited by the American National Standards Institute (ANSI). ATIS is the North American Organizational Partner for the 3rd Generation Partnership Project (3GPP), a founding Partner of the oneM2M global initiative, a member of the International Telecommunication Union (ITU), as well as a member of the Inter-American Telecommunication Commission (CITEL). For more information, visit Follow ATIS on Twitter and LinkedIn.

About iconectiv

Your business and your customers need to access and exchange information simply, seamlessly and securely. iconectiv’s extensive experience in information services and its unmatched numbering intelligence helps you do just that. In fact, more than 2 billion people count on our platforms each day to keep their networks, devices and applications connected. Our cloud-based Software as a Service (SaaS) solutions span network and operations management, numbering, trusted communications and fraud prevention. For more information, visit Follow us on Twitter and LinkedIn.

Marcella Wolfe, Manager – Public Relations and Marketing Communications, ATIS