The (old) K3 "Don't Call" list
These are the destination address ranges that where found in use approximately a year ago by the K3 firmware.
23.0.0.0/12
50.16.0.0/14
72.21.192.0/19
107.20.0.0/14
184.72.0.0/15
204.246.160.0/19
205.251.192.0/18
207.171.160.0/19
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