How to Fix 'Spam Likely' Caller ID with Free Caller Registry

By Sparkforge Support Team ·Last reviewed May 3, 2026

If a US business number is flagged 'Spam Likely', submit a single request to Free Caller Registry to clear it across AT&T, T-Mobile, and Verizon. With an EIN, register through Voice Integrity instead for stronger long-term protection.

Carriers flag numbers as Spam Likely, Potential Spam, or Scam Likely based on call patterns and complaints. This guide covers how to clear those flags on a US business number using Free Caller Registry, and when Voice Integrity is the better path.

Pick the right path first

Number is new or non-critical, or has an FTC complaint — trash it and buy a new one. Faster than remediation.
You have an EIN — register through Voice Integrity inside Sparkforge. Stronger long-term protection.
No EIN — submit through Free Caller Registry instead.

What is Voice Integrity?

Voice Integrity registers your US-based numbers with the major caller ID analytics providers — First Orion, Hiya, and TNS — so calls from your verified business show up as trusted.

Requirements

SHAKEN/STIR certification — required. Confirms calls aren't spoofed.
CNAM registration — recommended. Displays your business name on caller ID.
US numbers only — international traffic isn't supported.
EIN — required for SHAKEN/STIR. No EIN, no Voice Integrity.

What is Free Caller Registry?

AT&T, T-Mobile, and Verizon each use their own analytics engine (Hiya, First Orion, TNS) to assign spam scores. Free Caller Registry is the joint portal those three carriers built so a single submission gets reviewed by all three.

How to submit a request to Free Caller Registry

Go to Free Caller Registry.
Click Register Here.
Fill out your business information. Recommended values:
- Display name (next to phone number) — leave blank.
- I believe my calls are — Other.
- Service Providers — Twilio.
- Further information — leave blank unless you have specific feedback to share.
Click Submit.

The spam flag should clear within roughly four business days. If it doesn't, resubmit through Free Caller Registry or go directly to each analytics engine.

Direct analytics engine links

Hiya (AT&T) — hiyahelp.zendesk.com support form.
First Orion (T-Mobile) — firstorion.com/register-your-number.
TNS (Verizon) — reportarobocall.com/trf.

Frequently Asked Questions

How long does remediation take?

Typically four business days for all three analytics engines to process a Free Caller Registry submission.

Is there a limit on resubmissions?

No. You can submit as many times as you need until the flag clears.

Does Free Caller Registry cost anything?

No. Submissions are free.

Should I just buy a new number instead?

If the flagged number is new or has an FTC complaint against it, replacing it is usually faster than waiting for remediation. For established business lines, remediate.

Do I need an EIN to clear a Spam Likely tag?

Not for Free Caller Registry. You do need an EIN for SHAKEN/STIR and Voice Integrity, which provide stronger ongoing protection.