AISecurityProductivityConsumer

VoiceMailGuard – Extract scam callback numbers and auto-report

Scammers spoof caller ID but not the callback number in voicemail — catch it and report it

Problem
People get swamped by scam calls weekly and can't reliably block them because caller ID is spoofed, yet the callback number left on voicemail cannot be spoofed. Current tools focus on blocking caller ID and ignore this stable signal; victims end up manually listening, writing down numbers and almost never filing reports.
Solution
A lightweight voicemail analyzer: forward or upload scam voicemails, auto-transcribe and extract the callback numbers, look up the carrier/RespOrg, generate one-click abuse report drafts, and periodically re-check whether the number is still active. Start with English and Mandarin audio only.
Users
Individuals hit by frequent scam calls, small-business front desks, and community volunteers doing bulk reporting
MVP
Upload or forward voicemail; ASR and callback-number extraction; carrier lookup; generated report draft link; periodic number-activity recheck
Revenue
Free basic reporting; subscription for bulk reporting, number re-checks and history; API access for business phone systems
Why now
Scam call anxiety is everywhere while AI ASR and number-lookup APIs have become cheap enough for a solo builder; it is a narrow, high-pain niche big vendors ignore

Source discussions · 1

  1. Hacker NewsShow HN: Numban reports scammers callback number rather than spoofed caller ID3↑ 0
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