AUTHENTICATE CALLS

Build trust in every call with STIR/SHAKEN

Stop spoofed robocalls and boost answer rates with verified caller ID. STIR/SHAKEN ensures every call comes from a trusted source—so your customers never wonder who’s calling.

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Join over 150,000 businesses, including 8 of the 10 largest tech companies in the world

HOW STIR/SHAKEN HELPS

Bring trust back to caller ID with verified, authenticated calls

STIR/SHAKEN reduces spam, blocks spoofing, and reassures customers that your calls are legitimate.

Fight caller ID spoofing

Protect your brand from impersonation by signing outbound calls with trusted certificates, so only verified calls reach your customers.

Restore voice confidence

Show customers that calls are verified, building credibility and encouraging them to pick up.

Boost answer rates fast 

Improve answer rates by giving recipients confidence that calls are safe to answer.
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REDUCE SPOOFING

Reduce spoofed robocalls and build consumer trust

Our hosted authentication service signs outbound calls with Neustar certificates and manages tokens via the Policy Administrator (iconectiv), keeping you compliant with FCC requirements and protecting your brand reputation.

  • Sends and receives signed calls

  • Works with authorized ecosystem partnerships

  • Protects brand reputation

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BETTER CUSTOMER EXPERIENCE

Make it easy for customers to trust your calls

When people see a verified caller ID, they’re more likely to pick up. That means better engagement and higher satisfaction with every voice interaction.

  • Calls display verified status

  • Builds immediate credibility

  • Enhances customer experience

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INCREASE ANSWER RATES

Get more calls answered by restoring trust in caller ID

Use enterprise-grade minutes and robust tools for blocking, attestation levels, and CNAM, so legitimate calls reach recipients.

  • Apply attestation levels (A, B, C)

  • Manage whitelists and blacklists

  • Protect calling reputation

WHERE STIR/SHAKEN WORKS

Who benefits from STIR/SHAKEN?

Enterprises

Protect brand reputation and prevent spam labels so your sales and support calls reach customers without being flagged as spam.

Contact centers

Boost answer rates and agent efficiency by connecting calls the first time, improving productivity and customer outcomes.

Service providers

Stay FCC compliant and secure your networks with an enterprise-grade, end-to-end authentication solution that safeguards traffic integrity.

WHAT MAKES IT GREAT

End-to-end services for STIR/SHAKEN compliance

Transit service

Sends and receives all signed calls between SIP-based providers at no extra cost.

Signed call authentication service

Signs outbound calls using Sinch certificates for complete authentication.

Hosted call authentication service 

Uses service provider certificates on outbound calls for complete flexibility.

Verification service

Validates incoming calls and returns verification via verstat for incoming calls.

Call treatment

Blocks robocalls, applies attestation levels, and manages CNAM, whitelists, and blacklists.

Attestation management

Uses attestation levels (A, B, C) for verification strength across different call types.

End-to-end partnership

Get compliance and administrative guidance from implementation through ongoing management.

Simplified hosted solution

Enterprise-grade managed service lets you focus on your business while we handle STIR/SHAKEN compliance.

STIR/SHAKEN FAQs

STIR/SHAKEN is a set of technical standards for caller ID authentication. STIR stands for Secure Telephone Identity Revisited, and SHAKEN means Secure Handling of Asserted information using tokens. These confirm that calls come from a real caller ID.

STIR/SHAKEN adds a digital signature to SIP INVITEs. The originating provider authenticates and signs the identity header, and the recipient provider verifies it before delivering the call.

All U.S. voice providers and foreign providers terminating calls to the U.S. must comply under the FCC TRACED Act or file mitigation plans.

You need an Operating Company Number (OCN), a 499 Filer ID with USAC, and registration in the FCC Robocall Mitigation Database.

Yes. STIR/SHAKEN is preferred under CRRC 2018-32, and our solution complies with both U.S. and Canadian requirements.

STIR/SHAKEN provides transparency and trust via authentication, significantly reducing fraudulent calls, but it doesn’t guarantee all robocalls can be stopped.

STIR/SHAKEN caller ID refers to the use of these standards to verify and authenticate the caller ID information, helping recipients trust that the displayed number is legitimate.

STIR/SHAKEN compliance helps prevent spoofed calls, increases answer rates, and protects your brand reputation by making only verified calls reach your customers.

Attestation levels (A, B, C) indicate the degree of trust and verification for a call, helping recipients assess the legitimacy of incoming calls.

Talk to an expert about STIR/SHAKEN caller authentication

Learn how to protect your customers from spoofed robocalls, improve answer rates with trust indicators, and restore confidence in voice.