I happen to work for that company and the reason we can call you is because we are not soliciting anything, we are not trying to sell you any product or service. Our surveys are for your benefit. http://www.nwrg.com/
I got a call from this number and it was just simply asking me if I was still planning on attending a focus group that I'd signed up for, which was scheduled for the following day. No harm done.
Caller ID showed "NW Research". They said they are calling from Northwest Research Group - NWRG - "is a full service, strategic marketing research and consulting firm that delivers the power of knowledge for use in business decision-making to our client partners nationwide" (from their website). I said I am on the do not call list and do not want to be called.
She said she wants to do a survey and they don't have to follow the DNC regulations.
Here is their website. I am trying to get my number removed through it: www.nwrg.com