CNAM is a U.S.-based service that displays a business name on incoming calls, improving brand recognition and call answer rates. Its visibility depends on the recipient’s carrier.

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BizStackPro Phone SHAKEN/STIR & CNAM – BizStackPro Help

BizStackPro Phone SHAKEN/STIR & CNAM

Q: Does A2P registration include SHAKEN/STIR?

Yes. When you register for A2P messaging, all phone numbers in your BizStackPro account are automatically registered for SHAKEN/STIR.

Q: Does SHAKEN/STIR guarantee spam labels will be removed?

No. SHAKEN/STIR reduces spam mislabeling but cannot eliminate it entirely. It verifies your caller identity to improve trust and call completion.

Q: How long does SHAKEN/STIR approval take?

Approval typically takes up to 4 days once you submit business information inside the Trust Center.

Authenticate caller identity, improve answer rates, and reduce spam labeling by registering SHAKEN/STIR and CNAM in the BizStackPro Phone Trust Center.

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What SHAKEN/STIR Is

SHAKEN/STIR is a caller ID authentication framework used in the United States to verify that your business phone number is legitimate and not spoofed. It uses digital certificates to confirm that calls originate from the rightful owner of a phone number.

When you place a call, the caller ID is evaluated against the authentication framework. This helps carriers and recipients trust that the call is coming from a verified business.

Good to know: If you register for A2P messaging, your BizStackPro phone numbers are automatically included for SHAKEN/STIR registration as part of that process.

Why SHAKEN/STIR Matters

Improves call completion rates and answer rates
Reduces the chances of your number being mislabeled as spam
Builds trust with carriers and recipients
Helps mitigate spoofing and scam-call behavior across networks

Important: SHAKEN/STIR helps reduce mislabeling, but it does not guarantee spam labels will never appear. Carriers still apply their own spam-filtering algorithms.

What CNAM Is

CNAM (Caller Name Delivery) is a U.S.-only service that can display your business name on the recipient’s phone when you call. It improves recognition and can increase pickup rates, but visibility depends on the recipient’s carrier and plan.

Quick clarification: SHAKEN/STIR verifies the number. CNAM helps display the name. They solve different pieces of “caller trust.”

How to Register for SHAKEN/STIR (Voice)

Go to Settings → Phone Numbers.
Open the Trust Center tab.
Select SHAKEN/STIR (Voice).
Click Start Registration.
Enter your business details and confirm your identity.
Submit the form.

Once submitted, approval typically takes up to 4 days.

How to Register for CNAM (U.S. Only)

Go to Settings → Phone Numbers → Trust Center.
Select CNAM (Voice).
Enter accurate business details and submit.

CNAM does not guarantee every carrier will display your business name, but many major carriers support CNAM lookup.

How Numbers Link to Your SHAKEN/STIR Profile

After your SHAKEN/STIR profile is approved:

Existing numbers are automatically linked
Newly purchased numbers are linked automatically
No manual linking is required

Additional Notes & Common Questions

Why isn’t my business name showing?
CNAM is required to display a business name. SHAKEN/STIR verifies caller identity, but it does not add a name label.

Can SHAKEN/STIR prevent spam labels?
It helps reduce mislabeling, but carrier spam filters can still label calls based on patterns, complaints, and traffic.

What about international spam labeling?
International calls don’t follow the U.S. SHAKEN/STIR framework. For international labeling, you typically need to contact the terminating carrier directly.

Increase trust and improve call pickup rates

Registering SHAKEN/STIR and CNAM can reduce spam mislabeling and help customers recognize your business when you call.

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Frequently Asked Questions

What is SHAKEN/STIR?

SHAKEN/STIR is a caller ID authentication framework that verifies phone numbers using digital certificates, helping prevent scam and spoofed calls and improving call answer rates.

Does A2P registration include SHAKEN/STIR?

Yes. When you register for A2P messaging, your phone numbers are automatically registered for SHAKEN/STIR in BizStackPro.

What is CNAM?

CNAM is a U.S.-based service that can display a business name on incoming calls. Whether it displays depends on the recipient’s carrier.

Does SHAKEN/STIR guarantee spam labels will be removed?

No. It reduces mislabeling, but carriers still apply their own spam-filtering rules.

How long does SHAKEN/STIR approval take?

Approval typically takes up to 4 days after you submit your business details in the Trust Center.

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Verified caller ID helps your calls get answered

SHAKEN/STIR strengthens caller authentication, and CNAM can display your business name—together they help improve trust, reduce spam labeling, and boost answer rates.

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More trust. Better pickup.

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