In this article, we will learn how we can increase our call answer rates by remediating 'spam likely' / 'potential spam' / 'scam likely' on the caller ID in the US (US only).


If the phone number flagged as 'spam likely' is relatively new or not critical to your business or has a FTC complaint, we recommend trashing the phone number and getting a new one. It's faster, easier and more convenient for you as compared to remediating the 'spam likely' tag.


If you have an EIN and your number is flagged as ‘Spam Likely’, we recommend registering through Voice Integrity, available in the portal. For full steps, see our article: Why are my Calls marked as Spam and how can I avoid it

If you don’t have an EIN, we suggest registering your number with the Free Caller Registry instead.


What is Voice Integrity?

Voice Integrity is a game-changing feature that helps protect your business calls from being flagged as “Spam Likely.” By registering your U.S.-based phone numbers with top caller ID analytics providers—First Orion, Hiya, and TNS—you can improve pickup rates and reinforce your brand’s trustworthiness.

Why Turn On Voice Integrity?


If your business numbers are flagged or blocked, Voice Integrity helps you:

  • Fix bad reputations and clear “Spam Likely” labels from legitimate calls.

  • Increase pickup rates—recipients are more likely to answer when your caller ID shows a verified, trusted name.

  • Ensure your calls are seen as authentic, not suspicious.


What You Need to Get Started


Before activating Voice Integrity, ensure you meet these requirements:

  • SHAKEN/STIR Certification (Required):
    Confirms your calls are legitimate and not spoofed.

  • CNAM Registration (Recommended):
    Displays your business name as the caller ID, increasing credibility.

  • U.S. Phone Numbers Only: Currently, Voice Integrity applies only to U.S.-based numbers. International traffic is not supported.


    Note- An EIN (Employer Identification Number) is required to complete
     SHAKEN/STIR registration. If you don’t have an EIN, we recommend registering your number with the Free Caller Registry instead.


What is Free Caller Registry?

Carriers like AT&T, T-Mobile and Verizon use analytics engines to generate and maintain spam scores for caller IDs. These 3 carriers have different analytics engines. All the 3 analytics engines partnered to create Free Caller Registry where you can submit a single request and all of them will re-consider the 'spam likely' tag on your caller ID.


How to submit a request on Free Caller Registry?

  1. Go to Free Caller Registry

  2. Click on 'Register Here'

  3. Fill out this information to the best of your knowledge
     
  4. The recommended values for some fields have been shown in the screenshot above. They're also listed below:
    1. Display name (beside Phone Number): blank
    2. I believe my calls are: Other
    3. Service Providers: Twilio
    4. Please provide further information if you have received specific feedback ... : blank
  5. Click 'Submit'

Within 4 business days, the spam flag should be removed. If it is NOT, then you can re-submit this on Free Caller Registry or try submitting it directly on the 3 analytics engines. Their links are stated below:

  1. Hiya (AT&T): https://hiyahelp.zendesk.com/hc/en-us/requests/new?ticket_form_id=824667
  2. First Orion (T-Mobile): https://firstorion.com/register-your-number/
  3. Transaction Network Services (Verizon): https://reportarobocall.com/trf/



Frequently Asked Questions

How much time does this usually take?

Usually around 4 business days for all 3 analytics engines.


How many times can I submit this?

Voice Integrity can be submitted once. Free Caller Registry can be submitted as many times as you want.


How much does a submission cost?

Both Voice Integrity and Free Caller Registry are free of cost.

Need Help?

If your outbound calls are still showing Spam Likely, Potential Spam, or Scam Likely, first review the affected number’s registration and calling activity.

Verify that:

  • The affected phone number is a U.S.-based number.

  • Caller authentication has been completed where required.

  • The business name and registration information are accurate.

  • Caller ID information is current and matches the business using the number.

  • The affected number has been submitted through the appropriate caller reputation registration process.

  • Enough time has passed for caller reputation databases and carrier networks to update.

  • The number is being used for legitimate business calls and is not generating unusually high complaint or rejection rates.

  • Call volume and dialing patterns are consistent with normal business activity.

  • The number has not previously been associated with excessive spam complaints or other reputation issues.

  • Recently changed business or caller information has been updated before requesting another review.

If the number was recently registered, allow several business days for changes to appear across carrier networks.
Different carriers and caller ID systems may update at different times.

If the issue continues, collect the affected phone number, current registration status, caller name, approximate date the spam label first appeared, and a screenshot showing the Spam Likely, Potential Spam, or Scam Likely label before contacting support.