Block IP Addresses when not from the RingCentral IP ranges.
Automatically block IP Addresses when not in the following IP ranges:
80.81.128.0/20
103.44.68.0/22
104.245.56.0/21
185.23.248.0/22
192.209.24.0/21
199.68.212.0/22
199.255.120.0/22
208.87.40.0/22
This is to avoid Phantom calls or SIP attacks.
4
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Sonia
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