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0 pointsbadminton17y ago0 comments

They don't come from your area code, that's just part of the spoofing.

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rdtsc7y ago· 2 in thread

I meant to say the caller ID shows numbers from the local area code often. So blocking international numbers might not work.

aparks5177y ago

The signaling data includes the real origin. CID is convenience data provided by the originator. The telcos wouldn’t use it for anything important, like billing.

rdtsc7y ago

> The signaling data includes the real origin

Anyone can set up a bunch Asterisk or Freeswitch servers anywhere in the world and use VOIP. How does it know where the "real" origin is.

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