Got a call today from this number. Same thing, no one talked for about 20 seconds then I disconnected the call. I was goggling the number and came across this page. Thank you for the information everyone.
Just got another call from that number - added it to the call sentry blacklist. I didn't hear anything but given some folks report beeps, I could surmise it might be a FAX spam?
April 1, 2015- 9:17am. # 213-257-5233 Los Angeles CA
This number called and no one came on the line. When I returned the call at this number, it states " Verizon wireless, this number has been disconnected"
My guess is this number is forwarded into a cell phone that has had the service shut off.