Voice communication network defense security which allows for managing and/or preventing voice calls based on which telecommunication carrier provided the calling number. By managing calls based on telecommunication carrier as opposed to the calling number, the present invention seeks to prevent intrusion by wrongdoers who may otherwise be in possession with an unlimited supply of calling numbers. Further, by implementing the security measures at the voice communication network perimeter, voice calls can be managed and/or prevented/block in real-time while the call is in a pre-answer state. As a result, the present invention provides the capability to prevent/block wrongdoers from accessing the intra-voice communication network or, at a minimum ensures that potential wrongdoers are properly vetted through an investigative process.