(323) 471-8721 - nothing definite, but the calls go directly to my phone, not through my service. Never use that number, and Never answer those.
Map display places this adjacent to a law enforcement address.
Program is in place that if a person answers a call from, or places a call to, a number identified as associated with alleged criminal activity that number, and person(s) can then be investigated without further need of a warrant. Including, email and finances.
There is nothing to prohibit law enforcement from making the call from a phone previously entered into evidence.
A stalker, or gangbanger even, can provide the number separate from the original allegations / report of criminal activity. Innocence must then be proven, not guilt, by the person(s) investigated.