Plivo now supports geo permissions for outbound calls on Zentrunk, Plivo’s cloud-based SIP trunking product. Geo permissions helps users prevent toll fraud attacks.
Toll fraud is a situation where fraudsters take control of a customer’s VoIP infrastructure and make calls to expensive destinations. An affected customer may experience a sudden surge in their call usage and expenses towards uncommon destinations.
With geo permissions enabled for your account, you can adopt proactive measures to prevent toll fraud.
Zentrunk geo permissions
Zentrunk users can now restrict the countries to which you can place calls globally. Configure country-specific rules for outbound trunks and set an account-level default by visiting Zentrunk > Geo Permissions on the Plivo console. See our documentation for complete info.
Enable calls to specific countries
You can enable and disable calling to selected destinations by choosing specific countries to which you expect to make outbound calls. You can configure these separately for different trunks. Zentrunk will allow calls to selected countries and block calls to all other destinations.
Block calls to high-risk destinations
Plivo periodically analyzes call patterns and rates of networks worldwide and identifies high-risk destinations susceptible to toll fraud. These high-risk phone networks are unlikely to be used by end consumers for regular use cases. You can enable high-risk destination blocking to ensure that calls made to these destinations are blocked.
To prevent losses from potential toll fraud, we recommend that you configure geo permissions to enable calls to only those countries that you or your customers expect to make calls, and enable blocking of high-risk network groups.
Zentrunk geo permissions is available at no additional cost.
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