This number called the office yesterday after hours. There was no message on the answering machine. Based on the caller ID, I suspect this might have been an alleged Google/Google Plus robocall.

I'm not sure if this is related to another call we received from the 734-666 exchange in August:
http://800notes.com/Phone.aspx/1-734-666-9692 / CID: CUSTOMER SERVIC

Call from unfamiliar number.  No message left.