Looks like OSU fundraising. Found this aid on craiglist with this number listed as callback. "OSU Foundation is Hiring student callers!" http://corvallis.craigslist.org/mar/838075566.html
I ran this number through the OSU web site's "find someone" and got NOTHING. This caller now calls nightly at around 8 p.m. CST. Leaves no message and said nothing the one time I answered.
Call came in around 9PM. I didn't answer, but am assuming it is OSU in their annual fund raising drive. My late husband did graduate from OSU, but they are still trying to get money out of me. I just let the answering machine pick up if they let the phone ring that long. As long as I have caller ID, I won't answer any calls from anyone I don't know.
Called at noon one day and left no message, called again the next day at 8pm PST. I also looked this number up on "find someone" on OSU's website and it wasn't listed. I haven't answered it yet, and probably wont after reading the following comments on it.