I also received a call from this number with a calling name of MSAA.  They immediately hung up when I answered.  I called it back and got the Multiple Sclerosis Association of America fund-raising response line announcement.  So, either the original call was really from them, or someone out there has equipment to falsify their calling number.  It is the terminating telco switch that adds in the name associated with the number.  The originating number can be substituted using an AIN originating trigger (For those "In the know").