Do Not Originate (DNO) List: What It Is and Why VoIP Resellers Should Care
VoIP MS
JULY 15, 2025
In the same way, DNO lists can include disconnected or unused numbers that are often used in spam calls – any call spoofing one of those numbers is almost certainly illegitimate and can be safely blocked. It reduces wasted bandwidth and termination costs by eliminating obvious spam calls early.
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