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How is KYC/KYCaaS different from STIR/SHAKEN or call authentication technologies/services?

🔍 TL;DR

STIR/SHAKEN confirms a call is legitimately signed and authorized at the number level, but it does not verify the business behind it. KYC and KYCaaS validate the identity, legitimacy, and risk profile of that business. Authentication shows the call is signed. KYC ensures the signer is trustworthy.

📊 Key Facts About Branded Calling

  • Operate at different trust layers: KYC validates the business entity, while STIR/SHAKEN authenticates the call itself.
  • STIR/SHAKEN confirms call integrity: Uses cryptographic signatures to verify the caller ID and whether a provider has authorized number use.
  • KYC validates business legitimacy: Confirms who the business is, what it does, and whether it complies with regulatory and telecom policies.
  • KYCaaS scales identity verification: Combines data sources, AI analysis, and human review to continuously assess business risk.
  • Closes critical trust gaps: STIR/SHAKEN does not evaluate legal exposure, fraud risk, or use case appropriateness. KYC does.
  • Enables stronger authentication outcomes: Trust frameworks are more effective when built on verified, high integrity identity data.
  • Simple distinction: Authentication proves the call is signed. KYC proves the signer can be trusted.

Know Your Customer (KYC) and STIR/SHAKEN operate at different layers of the trust stack, and both are necessary.

STIR/SHAKEN is a call authentication framework. It cryptographically signs calls to indicate whether the source of a phone number and whether a provider has verified that a caller is authorized to use the number being presented. What it does not do is establish whether the business behind that number is legitimate, accurately represented, or operating in accordance with telecom policy.

Numeracle’s KYC as a Service (KYCaaS) solution addresses that gap. It vets the business entity: who they are, what they do, whether any regulatory or legal exposure exists, and whether their intended use case is appropriate for the services they're requesting. The decisions made through proper KYC vetting then enable the trust frameworks above it to function with integrity.

Authentication tells you the call is signed. KYC tells you the signer can be trusted.

This content was developed by Numeracle, the leader in Number Reputation Management and Branded Caller ID solutions for enterprises, contact centers, and service providers. As part of our mission to restore trust in communications, Numeracle creates educational resources to clarify complex topics in telecom, compliance, and call delivery.

Our platform empowers organizations to manage branded calling, improve caller id reputation, and stay compliant with evolving regulatory and industry standards. FAQs like this are designed to provide clear, actionable guidance backed by our expertise in verified identity, call labeling mitigation, and spam prevention.

To explore how Numeracle supports trusted and effective outbound communications, visit www.numeracle.com.
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