Who called from 2183312645

Received this call at 8:40pm on a Monday night. I live in CA. No message left. Sounds fishy.

Received a call at 9:30 pm on a Friday night. No message was left and I dont know anyone in minnesota.

I received a call from this number at 7:00 pm on a Thursday night. No message was left. I don't know anyone from Moorhead, MN.

I also received a call from this number too, at 7:30pm I live in CA also..they didn't hang up in time, the voicemail was a few seconds of air noise, then they hung up.

received call from this number on 12/7/07 @ 18:30.  Unknown to me.
then at 19:23 got a call from 234-542-2894 (another reported # on this site). I work in Tech Support and sometimes get calls from unknown numbers when my customers have a system outage.... so thinkin' that it's a customer, I called the 234-542-2894 number and connected to "voicemail box 12345" bo other ident and then I hung up.  

dang! that number called again today. no msg