Publications
Every report we publish, newest first. Each one lists the numbers we reported, who we reported them to, and how long a response took.
20263 reports
- The Fight Against Scammers On Telecom Networks: Why America’s Telecoms Are Losing the War On ScamsWe compare how Lumen, IP Horizon, Sinch and Bandwidth handled our reports of numbers used in tech support fraud, and show how wholesale “marks” let scammers get past KYC checks.
- Part 1 of 5Organized Fraud: How Overseas Scammers Are Allegedly Acquiring U.S. Telecom Access for Tech Support FraudWe trace toll-free numbers used in tech support fraud back to Freedom Call Services and Knot Networks, and document what happened after we reported them.
- Review of RingCentral Fraud Controls (2026)Our third report on RingCentral: 20 toll-free numbers reported, none confirmed shut down, and how Bandwidth and Lumen handled the residential numbers scammers moved to next.