Calls signed with STIR/SHAKEN, from a number you control.
Calls from numbers you get through VeraDial are signed with STIR/SHAKEN through Twilio. The receiving carrier weighs that signature, along with its own analytics, when deciding how to show your call.
By Graham Thomson · Updated April 30, 2026
- Calls from VeraDial numbers signed with STIR/SHAKEN through Twilio
- Up to B-level attestation when you verify a number you already own
- No spoofing — only numbers you control
- Built on Twilio's trusted-calling stack
What it does
Verified Caller ID capabilities.
Signed calls on purchased numbers
When VeraDial provisions you a number, outbound calls from it are signed with STIR/SHAKEN through Twilio, VeraDial's voice carrier.
Source: FCC call authenticationVerify a number you already own
If your business already has a number, verify it through VeraDial as a secondary outbound caller ID. Calls from verified numbers can carry up to B-level attestation, which shows the provider knows the customer.
No spoofing path
VeraDial only lets you call from a number you own or have verified. There is no path to display a number you don't control. This is how trust actually compounds.
Source: CRTC caller ID spoofingCarrier-grade infrastructure
All voice routes through Twilio's trusted-calling stack. The trust chain runs from your VeraDial line through Twilio's STIR/SHAKEN signing to the receiving carrier.
Source: Twilio STIR/SHAKEN trusted callingVisible to recipients
On supported handsets and carriers, the receiving phone can show a verified indicator. Display behavior depends on the receiving carrier — see the spam guide for what changes and what doesn't.
In practice
Who uses verified caller id?
Contractor calling a new lead
You picked up a number last month. Your call to a new lead goes out signed with STIR/SHAKEN, so the lead's carrier can check the signature before deciding how to show it.
Sales rep working a list
On a 50-prospect day, even a small pickup-rate lift compounds. Verified attestation isn't a bypass for cold-call filters — but it removes the easiest reason for a carrier to drop your call.
Realtor with an established number
You verify your existing number as a secondary caller ID. Calls can carry up to B-level attestation, which shows the provider knows you as a customer, not that it has confirmed your right to use the number.
FAQ
Common questions.
What's the difference between A, B, and C attestation?
A is the strongest: the originating carrier verified both the customer and the customer's right to use the number. B verifies the customer but not the specific number. C is unsigned or signed without enough info. Carriers favor A-signed calls when ranking spam likelihood.
Source: FCC call authenticationWill my calls always show as verified?
Display behavior depends on the receiving carrier. STIR/SHAKEN tells the carrier the call is trustworthy — what they show on screen is up to them. The trust signal is doing its work even if no badge appears.
Can I keep my existing business number?
Yes. Verify it as a secondary outbound caller ID, and outbound calls can carry up to B-level attestation. SMS still routes through your VeraDial-provisioned number for carrier compliance reasons.
What stops someone from spoofing me?
STIR/SHAKEN exists to make spoofing visible. A spoofed call signs at C-level or fails to sign — receiving carriers and apps can show that distinction. It doesn't end spoofing overnight, but it changes the math.
Source: FCC TRACED Act implementationWhy does my new number still show Spam Likely sometimes?
Even verified numbers build reputation over time. Signing helps carriers check the caller ID, but it does not remove a spam label, and answer rates, block rates, and call volume all factor in. See the spam-likely guide for what helps.
Sources
References cited on this page
- FCC call authentication
US regulator overview of caller ID authentication and STIR/SHAKEN policy.
- CRTC caller ID spoofing
Canadian regulator explanation of spoofing, traceback, and STIR/SHAKEN caller ID authentication.
- Twilio STIR/SHAKEN trusted calling
Carrier infrastructure reference for STIR/SHAKEN trust authentication.
- FCC TRACED Act implementation
TRACED Act implementation page covering robocall mitigation requirements.
Hear Vera in action.
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