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VOIP number checker and risk context

VOIP numbers are common in legitimate and abusive workflows. Treat them as a risk signal, not automatic fraud proof.

Common causes

  • High volume signups from unknown VOIP ranges.
  • Identity mismatch between caller and profile.
  • Repeated support abuse patterns.

How to fix

  • Run number check and combine with email/domain trust.
  • Apply extra verification for high-risk actions.
  • Track repeated abuse indicators.
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