STIR/SHAKEN

A pair of standards for cryptographically attesting that a calling party is authorized to use the caller ID they're presenting.

What it means in practice

STIR (Secure Telephone Identity Revisited) and SHAKEN (Signature-based Handling of Asserted information using toKENs) together form the framework carriers use to sign outbound calls. Attestation levels are A (full, carrier vouches for caller + number), B (partial, carrier vouches for caller only), or C (gateway, minimal vouching). Calls without A-level attestation are increasingly flagged as spam by downstream carriers.

VICIPanel UI showing STIR/SHAKEN — How STIR/SHAKEN surfaces in VICIPanel

In VICIPanel

VICIPanel's carrier dashboard shows per-trunk STIR/SHAKEN attestation breakdown. If your A-attestation share drops below your carrier's contractual minimum, we alert you.

Related terms

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Telephony

Caller ID

The phone number shown on the recipient's phone when an outbound call arrives, set at the carrier or dialer layer.

Telephony

SIP Trunk

A virtual telephony connection between your VICIdial system and a carrier, using Session Initiation Protocol.

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