Everything you need to know about the FCC's Call Authentication Framework
stir/shaken implementation deadlines
Will my calls be blocked?

According to the FCC, calls from voice service providers who have either not implemented the STIR/SHAKEN framework or have not filed in the Robocall Mitigation Database will have their domestic voice traffic blocked.

To support the industry-wide initiative to cut down on the number of fraudulent calls, STIR/SHAKEN aims to provide verification of the identity of originating party into the network, operationally across all carriers, to reduce illegally spoofed calls and assist the Industry Traceback Group in the prosecution of bad actors.
how it works
STIR/SHAKEN is a framework that assigns a certificate of authenticity to each phone call for use across the telecom network, acting as a digital signature of trust passed from carrier to carrier to improve traceable call delivery.
Secure Telephone Identity Revisited
Signature-based Handling of Asserted information using toKENs
Enterprise STIR/SHAKEN Gif
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, like a checkmark, which may be presented at the time of call on Android devices or as a grey checkmark in the call log of 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.
implementation reports
tuesday talks podcast
which service providers have done what?
The Robocall Mitigation Database
The FCC created the 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 are required to file and provide detailed information regarding their implementation of the STIR/SHAKEN and/or a Robocall Mitigation Plan. The reputation of the voice service provider may be impacted by how rigorous of a policy is defined and implemented.

Voice service providers who have not filed in the Robocall Mitigation Database by September 24th, will have their traffic blocked at the network level until they do.
call authentication solutions

How to achieve STIR/SHAKEN verified calls

STIR/SHAKEN graphic - caller identity

Enterprise or BPO/Contact Centers

As a calling enterprise, deploying STIR/SHAKEN on your behalf was the responsibility of your outbound voice service provider.

Learn More

Service Providers

For service providers, ensuring your calls will be delivered as verified is a function of putting in place a Know Your Customer-based methodology to identify every entity originating calls on the network.

This spans also needing to understand their clients’ deeper client network and any intermediary who the service provider is directly/indirectly delivering calls on or on behalf of, from the calls’ origination to the calls’ termination.

Learn More
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 as an integral part of STIR/SHAKEN, we serve on the IP-NNI Task Force (group co-authoring SHAKEN) and Chair the PACE Communication Protection Coalition.
We represent the interest of legal calling entities via our leadership as Chair of the Enterprise Communications Advocacy Coalition (ECAC), to represent the combined concerns of enterprises, contact centers, and more.
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. Reach out if we can help bring more awareness around STIR/SHAKEN to your team.
You & 
Your Carrier
Who Calls
the Shots?
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.
verified identity and call authentication
more about us

STIR/SHAKEN Joint Solution Partnerships

Proof of Concept including Numeracle, NetNumber, Comcast, Twilio and Everbridge to present RCD data for branded calling solutions
STIR/SHAKEN Proof of Concept
Comcast, Everbridge, NetNumber, Numeracle, and Twilio demonstrated the first-ever telephone call with authenticated caller ID and rich call data, powered by the STIR/SHAKEN framework and protocols.

Using RCD PASSporT technology, this marked a milestone in protecting consumers from fraudulent robocalls and building greater trust and transparency for phone users.
press release
A crash coure
ongoing industry discussion

Our STIR/SHAKEN Resources

Tuesday Talks
biweekly live Q&A podcast series
  • How STIR/SHAKEN works, the challenges, and mythbusting its role
  • How it addresses Robocalls and call labeling alongside Reputational Analytics
  • The Robocall Mitigation Database & Requirements
  • Adding Rich Call Data for Branded Calling
  • Regulatory updates from the FCC
  • Cross-Border Call Delivery for International Communications

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!
It starts with an insight
Ready to take control of how your identity is presented to consumers? 
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