There are 3 main SPAM Databases used by most carriers in North America:
- First Orion (used by T-Mobile and others
https://www.calltransparency.com - TNS (Transaction Network Services) (used by Verizon and others)
https://reportarobocall.com - Hiya (used by AT&T and others)
https://hiyahelp.zendesk.com/hc/en-us/requests/new
You can also register numbers directly with various carriers
Rogers/Hiya
Call Labels: “Spam Risk” or “Fraud Risk”
Contact: https://en-ca.hiya.com/products/connect/number-registration
AT&T/Hiya
Call Labels: “Spam Risk” or “Fraud Risk”
Contact: www.att.com/reviewmycalllabel
T-Mobile/First Orion
Call Label: “Scam Likely”
Contact: https://callreporting.t-mobile.com/
Verizon/TNS
Call Label: “Potential Spam”
Contact: www.voicespamfeedback.com or communications@tnsi.com
For a complete provider list to to fix any inadvertent call labeling or blocking, please consult:
https://www.ustelecom.org/the-industry-traceback-group-itg/call-labeling-and-blocking-points-of-contact/