Do Not Originate (DNO) List: What It Is and Why VoIP Resellers Should Care
VoIP MS
JULY 15, 2025
A Do Not Originate (DNO) registry is essentially an “outbound-calling blacklist”; a list of telephone numbers that should never originate calls. If a call appears to come from a number on the DNO list, it is highly likely to be spoofed or fraudulent and should be blocked. Let’s get started! How does DNO work in practice?
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