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why are we excited about stir/shaken?
STIR/SHAKEN call authentication
will identify the entity behind the call.
Enterprise STIR/SHAKEN Gif


Secure Telephone Identity Revisited

Signature-based Handling of Asserted information using toKENs

STIR/SHAKEN is a framework designed to assign a certificate of authenticity to each phone call for use across the telecom network.

These certificates will act as a digital signature of trust passed from carrier to carrier to improve traceable call delivery.
Is your company prepared?

About the STIR/SHAKEN Deadline

The FCC is leading the push for industry adoption of these standards to improve the ability to trace back to illegal call origination across all carriers.

As of March 31, 2020, the FCC has mandated that both originating and terminating voice service providers implement the STIR/SHAKEN caller ID authentication framework in the IP portions of their networks by June 30, 2021. STIR/SHAKEN is also mandated by the TRACED Act.

To ensure that the requirement is met, the FCC has created a Robocall Mitigation Database where voice service providers must file certifications with  detailed information regarding their implementation of the STIR/SHAKEN caller ID authentication framework and/or a robocall mitigation program. According to the SHAKEN Standard on assigning attestation levels, the originating service provider must establish a policy to decide what constitutes “legitimate right to assert a telephone number,” and states that the reputation of the voice service provider may be impacted by how rigorous of a policy is defined and implemented.

Once implemented, STIR/SHAKEN should provide the identity of origination of calls into the network, operationally across all carriers. To find out more about the implications of this deadline, check out our Tuesday Talks series.

Through a STIR/SHAKEN call, the originating service provider attests (or signs) the relationship with the caller, as well as their right to use that number. The use of an attestation indicator represents the originating signer’s ability to vouch for the accuracy of the source of origin of the call.

The levels of Attestation do not necessarily correlate to their trustworthiness. Analytics will remain in place for call validation treatment to ensure that unwanted, scam, or illegal phone calls will still be labeled accordingly.

Based on the current language provided by the TRACED Act, providers are not currently blocking calls based on its according Attestation Level.

[A] Full Attestation

source of call + Right to use caller id information
Attestation A

[B] Partial Attestation

source of call + Does not have the Right to use caller id information
Attestation B

[C] Gateway Attestation

Does Not know source of call + Does not have Right to use caller id information
Attestation C
The Checkmark
iOS Call log screenshot
The terminating result of a fully attested call is expected to render as a valid number indicator to a called party, for example a green checkmark. Through a few terminating providers, the checkmark may be presented at the time of call on Android devices or as a grey checkmark in the call log on iOS devices. The final display is still drastically limited by the device's capability to display complex data.

Numeracle's platform can support the STIR/SHAKEN delegated certificate model when it is fully adopted by the standards body. In the meantime, terminating service providers such as AT&T, T-Mobile, and Verizon are still in the process of developing local policies for rendering A-Level Attestation to a verified indicator.

Implementation plans
The Robocall Mitigation Database
This April, the FCC created a Robocall Mitigation Database to enforce TRACED Act requirements mandating the implementation of a caller ID authentication framework at the network-level. All voice service providers must file a record in the new database before June 30, 2021, providing detailed information regarding their implementation of the STIR/SHAKEN caller ID authentication framework and/or a robocall mitigation program.

Voice service providers who have not yet implemented the STIR/SHAKEN framework may also request an extension to the deadline if they provide a comprehensive plan to implement a robocall mitigation solution in accordance with TRACED Act requirements.
Robocall Mitigation Database graphic
For more information on the requirements and process of filing in the Robocall Mitigation Database and how to prepare for the deadline, read our blog: "Will My Calls be Blocked on July 1st?"
enterprise call authentication solutions

How to achieve STIR/SHAKEN verified calls

STIR/SHAKEN graphic - caller identity

Numeracle has joined together with NetNumber, STI Certification Authority (STI-CA) and leading provider of a comprehensive portfolio of STIR/SHAKEN solutions, to deliver Verified Caller Identity for STIR/SHAKEN, a joint solution to improve the delivery of legal enterprise calls through STIR/SHAKEN caller ID authentication and RCD (rich call data) display.

The joint Verified Caller Identity for STIR/SHAKEN solution will be delivered through an extension of Numeracle’s Verified Identity™ and Entity Identity Management™ platforms to include NetNumber’s Guaranteed Caller™ Enterprise STIR/SHAKEN solution set. This solution enables legitimate enterprise calls to be displayed on the called party’s device as verified through STIR/SHAKEN. Follow us through the end-to-end call authentication journey calls will take below:

verified caller identity for stir/shaken solution
numeracle leadership

STIR/SHAKEN & Numeracle's Verified Identity™


Advocacy &

To ensure the voice of the enterprise is represented and considered as an integral part of STIR/SHAKEN development, we serve on the IP-NNI Task Force (group co-authoring SHAKEN) and Chair the PACE Communication Protection Coalition.
Numeracle actively speaks on behalf of industry associations such as ARDA, American Bankers Association, ACA International, iA's Consumer Relations Consortium, PACE, and more, to represent the STIR/SHAKEN interests of enterprises and contact centers.
In support of our call center, industry, and association partners, we want to help you educate not only yourselves, but also the clients you serve. Please don't hesitate to reach out if we can help bring more awareness around STIR/SHAKEN to your team.

You & Your Carrier

Who Calls the Shots?

Enterprise Identity
More often than not, there are many 'layers' between an enterprise caller and the originating service provider responsible for generating call traffic on your behalf (i.e. dialing and CX platforms, multiple BPOs, outsourced call center partners, telephony vendors, etc.).
Call authentication through STIR/SHAKEN is all about validating the identity of a caller by connecting the dots between an enterprise, its call center vendors, and its originating carriers. You can start this process now by becoming a Numeracle Verified Identity™.
With so many 'layers,' it can be hard to prove who actually has authorization to originate traffic on your behalf when it matters most. We believe you (the enterprise) is in the best position to know who has the authorization to use any specific telephone numbers when making calls.
a crash course


ongoing industry discussion

Our STIR/SHAKEN Resources

Tuesday Talks
Our biweekly live Q&A series explores relevant topics related to call delivery, STIR/SHAKEN, caller ID technology, TRACED Act, brand identity, Rich Call Data, and so much more.

Check out our full podcast library here.
Listen on SoundCloud and YouTube for listening on-the-go.
Register for our next session

Live Panel Discussion

If you missed our live panel on STIR/SHAKEN "Verified" status and how it relates to the Enterprise & Contact Center, check out the intro to the event here, or watch the on-demand playback here!



Blog Posts

STIR/SHAKEN: What This Means for the ConsumerSTIR/SHAKEN: What This Means for the Consumer
Bekah Speaks: Numeracle takes a consumer perspective on STIR/SHAKEN to describe call delivery end-to-end. When illegal calls are originated in a world post-STIR/SHAKEN (...)
Podcast: KYC, Know Your Customer, now more than ever as FTC gets aggressive in enforcement against fraud and other illegal activityPodcast: KYC, Know Your Customer, now more than ever as FTC gets aggressive in enforcement against fraud and other illegal activity
In this podcast, Numeracle’s Rebekah Johnson and Fonative’s Steve Smith discuss the landmark FTC order setting a new precedent for due diligence. The describe the impact of ruling on carriers (...)
Will My Calls Be Blocked on July 1?Will My Calls Be Blocked on July 1?
With the June 30th, 2021 STIR/SHAKEN deadline right around the corner, here are all the facts you need to know about the authentication framework and the Robocall Mitigation Database requirements.
It starts with an insight
Ready to take control of how your calls and messages are presented to consumers? Start a conversation with us today.