Gee thanks for all the useful info Matt!  I answered, got only silence.  Prefix "154" seems very common to scam calls.  ID = "Name Not Found".

Got a call from this number on two lines at work at the exact same time. Both times, when I greeted with our company name, the callers quickly said they had the wrong number and hung up. There was the distinct sound of call center activity in the background.

Called before 6 pm yesterday. Left no VM.

I ignored the call, no VM left.

Caller frustrated in other end when I said nuthin. GOOD! Blockef