Who called from 4434516941

call early on Sat morning, woke me up.  answering machine picked up.  They left no message.

Called Sat morning (Seattle, WA). Caller ID says "V00512123400042" No message.
Calling the number gets a message that never says what their business name is. At the end of the message it says you can leave a message to be put on their do not call list.

Number is based in Baltimore, MD

Called around 7pm (also Seattle, WA). I picked up. There was no one on the other end.

Called at 4 pm. I picked up and no one was there when I answered.  I even waited 3-4 seconds after I said hello.

Caller ID from Baltimore. After saying hello a couple of times, I heard a beep, similar to a recording beep. I hung up when no one responded to my hello.