STIR/SHAKEN signing
Calls are cryptographically signed at origination, so carriers downstream can verify they weren't spoofed.
See STIR/SHAKEN attestation
Call Authentication
One number decides whether an authenticated call actually reaches your customer. Your answer rate.
Call authentication is the set of standards and infrastructure that prove a call is coming from who it says it's from. Getting it right is what separates a signed, trusted call from one that gets flagged before it rings.
What authentication actually requires
Signing is only the first layer. Getting a call trusted and answered takes all four.
A-Level attestation
QVD signs at full A attestation — both the caller and the number verified — as the originating carrier.
See STIR/SHAKEN attestationRich Call Data
Verified business name, logo, and call reason travel with the signed call as tamper-proof Rich Call Data.
See Branded Calling ID™Direct carrier termination
Calls route straight to AT&T, Verizon, and T-Mobile. Direct where it counts, and we test that the attestation arrives.
See direct carrier terminationUnauthenticated calls get labeled, blocked, or ignored
Carriers and handset apps score every inbound call in real time. A call with no attestation, weak attestation, or a flagged origin is more likely to display as Spam Likely, Scam Likely, or get blocked outright before it rings.
4.8B
Spam calls flooding US phones every month
90%+
Of consumers who refuse to answer unknown numbers
A-Level
The attestation tier QVD signs at as the originating carrier