When you call someone and their Caller ID labels your number as "spam" or "potential spam," it means their phone carrier has flagged your number as potentially unwanted. This doesn’t happen because of Masiero Voice but because the recipient’s carrier has marked your number in their database. This can occur for reasons like a high volume of outgoing calls, inadvertent reports from other users, or even past misuse of the number before it was yours.
Important Context: This almost always is occurring on cell phones as indicating of "spam" or "potential spam" is caused by a database lookup. When a call comes in, the recipient’s carrier checks a database to see if the number has been flagged as spam. If it has, the Caller ID will display a warning. The database marking of your phone number is not something we have direct control over. Understanding which cell phone carrier is marking the calls as spam is very helpful as it’ll direct efforts to the appropriate carrier’s link for requesting it be unmarked as such. If seeking to be extra proactive for this, complete the forms with all major carriers to cover all bases.
Follow the steps below to resolve the problem, and refer to the detailed lists for carrier contacts and registration options.
Step 1: Submit a Request to the Carrier
Identify the recipient’s carrier from the list below and use the listed contact method to request removal of the spam flag from your phone number. Each carrier has its own process—some require an online form, others an email or phone call. When reaching out, provide your phone number and explain that it’s being incorrectly flagged as spam. This helps the carrier update their database to stop labeling your calls with warnings like "spam risk."
Step 2: Wait for the Changes to Take Effect
Once you’ve submitted your request, allow 7-1- business days for the carrier to process it and update their systems. During this time, your calls may still appear as spam on some Caller IDs, as the changes propagate through their network.
Step 3: Follow Up if the Problem Continues
If the issue persists after a week, take these steps:
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Determine the recipient’s carrier: Ask the person you’re calling which carrier they use (e.g., AT&T, Verizon, T-Mobile), or look up their number online.
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Contact the carrier again: Refer to the list below for the appropriate contact method and submit another request.
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Mention your previous request and ask why the flagging continues.
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Include any reference numbers from your initial submission, if available.
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Carrier Contact Information for Spam Flagging Issues
Here’s a comprehensive list of carriers, the labels they use to mark spam calls, and how to contact them to request removal of the spam flag:
Altice
Call Labels: "Fraudulent Call" or CNAM prepend of "Spam?" or "Robo?"
Contact: robocallmitigation@alticeusa.com
AT&T/Hiya
Call Labels: "Spam Risk" or "Fraud Risk"
Contact: www.att.com/reviewmycalllabel
Big River
Call Labels: N/A
Contact: 855-244-7483
Comcast’s Xfinity Voice Service
Call Labels: "Blocked – High Spam Risk" or CNAM prepend of "Spam?"
Contact: www.xfinity.com/support/articles/report-call-blocking-errors or 844-963-0215
C Spire/TNS
Call Labels: "Potential Spam"
Contact: askus@cspire.com and communications@tnsi.com
Fidelity
Call Labels: "Fraudulent Call" or CNAM prepend of "Spam?"
Contact: www.fidelitycommunications.com/phone/robocallmitigation/correctionform
Frontier/Nomorobo
Call Labels: "Robocaller"
Contact: nospam@ftr.com or www.nomorobo.com/contact (choose "Report a number")
Lumen/Nomorobo
Call Labels: "Robocaller"
Contact: www.nomorobo.com/contact (choose "Report a number")
Midco
Call Labels: N/A
Contact: robocalling@midco.com
Spectrum/TNS
Call Labels: "Spam Likely"
Contact: https://reportspam.spectrum.com/charter/
Telzio
Call Labels: "Fraudulent Call"
Contact: support@telzio.com or 888-998-9080
T-Mobile/First Orion
Call Labels: "Scam Likely"
Contact: https://callreporting.t-mobile.com/
Truecaller
Call Labels: "Spam"
Contact: support@truecaller.com
US Cellular/TNS
Call Labels: "Potential Spam"
Contact: communications@tnsi.com
Verizon/TNS
Call Labels: "Potential Spam"
Contact: www.voicespamfeedback.com or communications@tnsi.com
Windstream
Call Labels: "Fraudulent Call" or CNAM prepend of "Spam?"
Contact: Windstream.Robocall.Mitigation@windstream.com
Registering Numbers with Analytics Providers
To prevent your number from being flagged as spam in the future, register it with these analytics providers. These services help ensure your number is recognized as legitimate, reducing the likelihood of erroneous flagging.
First Orion
Contact: www.calltransparency.com
Free Caller Registry (First Orion, Hiya, TNS)
Contact: www.freecallerregistry.com
Hiya
Contact: www.hiya.com/manageyourcallerid
Neustar
Contact: www.home.neustar/support (refer to Communications, Robocall Mitigation)
RoboKiller
Contact: partners@robokiller.com or https://robokiller.com/request-block-list-exception
TNS
Contact: www.reportarobocall.com/trf/
Registering with these providers is a proactive step to maintain your number’s reputation across carrier databases.