The ‘Spam Likely’ tag is one of the biggest challenges in the telecom industry today. Mobile phone carriers use algorithms to flag numbers suspected of spam or robocalling, often applying the label after only a few outbound calls. Unfortunately, legitimate businesses making normal outbound calls can also be affected.
How to Reduce the Chances of Being Flagged as ‘Spam Likely’
✅ Register Your Unitel Voice Phone Number
The best way to mitigate ‘Spam Likely’ tags is to register your number with FreeCallerRegistry.com.
This free registration process:
- Helps verify your business with First Orion, Hiya, and TNS (the analytics engines used by major U.S. carriers).
- Reduces the likelihood of your calls being marked as spam.
! Important: While this helps, it does not guarantee that your number will never be flagged, especially if your call patterns resemble spam behavior (e.g., high volume of short calls).
! This process does NOT replace outbound Caller ID registration. Click here for more details on outbound Caller ID.
What Factors Cause a Number to Be Flagged as ‘Spam Likely’?
Carriers analyze multiple factors when determining whether a number is spam:
! Common Metrics Monitored:
- High outbound call volume (large numbers of calls from the same number).
- Calls frequently sent to voicemail (indicating recipients are ignoring them).
- Calls Per Second (CPS) (rapid dialing behavior).
- Level of Attestation (how verified the number is in the call network).
- Short call durations (calls under 6 seconds are highly suspicious).
- Average call length (very short calls can appear spammy).
If your business frequently makes short, repeated calls, your number is more likely to be flagged.
When Should I Register with the Free Caller Registry?
- New Numbers: Register your number as soon as it is purchased.
- Ported Numbers: If you are transferring an existing number, register it immediately after the porting process is complete.
What If My Number Has Already Been Tagged as ‘Spam Likely’?
If your number is already flagged, contact the carrier that applied the tag to request removal.
Carrier Help Desk Links for Spam Call Reporting:
- T-Mobile: https://callreporting.t-mobile.com/
- Verizon: https://voicespamfeedback.com/vsf/
- AT&T: Submit a request via Hiya
- CenturyLink: Email robocall.reporting@centurylink.com or contact Nomorobo.
- Nomorobo: https://nomorobo.com/contact (They offer a whitelist feature for subscribers).
- Sprint: Call 888-211-4727 or report via TNS.
- US Cellular: Call 888-944-9400 or report at uscellular.com/support/robocall/index.html.
- Windstream: Call 800-347-1991 or email via windstream.com/Support/Phone/Troubleshooting-repair.
Other Ways to Reduce Spam Likely Tags
1. Ask Customers to Save Your Business Number
- Some third-party spam blockers automatically flag unknown numbers that aren’t saved in a contact list.
- Encourage customers to save your business number to prevent accidental blocking.
2. Educate Clients on Third-Party Spam Blockers
- Many users unknowingly have aggressive spam filters enabled.
- If a client is frequently missing your calls, suggest they check their phone settings or third-party spam blocker apps.
Need to Display Your Business Name Instead of Just Your Number?
If you want the person receiving your call to see your business name instead of just your phone number, click here to learn how to enable CNAM (Caller ID Name).
ⓘ Still confused? Having trouble?
Contact us at support@unitelvoice.com, call 855-888-6423 x2, or Chat with us online.
We're here to help!