I have received calls from this number many times. They always show up on my caller ID as unavailable, and the phone number appears without and area. If if pick up the phone, they hang up. (Robo call, maybe). When I searched for the number in Who Called Us, it returns the following after NANPA.

Lsan Da 01, California (Nextel Communications, INC.)
L. Enos
 Oct 26th, 2011