When you report a scam voicemail through NumBan, there's a lot happening behind the scenes to make sure your complaint reaches the right people.
Number Lookup
First, NumBan looks up the callback number to identify the responsible carrier or Responsible Organization (RespOrg). This tells us who controls the number and where to send the complaint.
Complaint Routing
We send the abuse complaint to the carrier's designated abuse contact. The complaint includes the callback number, the type of scam, and the number of reports we've received — but never your personal information. All reports go through a NumBan-managed relay email address.
Tracking
After filing, NumBan re-checks the reported number weekly. We call it from a monitoring line and check whether it's still active. When a number becomes disconnected or non-routable, we confirm the kill and notify all users who reported it.
The Power of Volume
One complaint might get ignored. But when a carrier sees multiple verified reports on the same number from different consumers, they have both the evidence and the regulatory pressure to act. That's the power of NumBan's community reporting model.