Just ot a call from 971-228-1761.  After I said hello, no voice, just a click and disconnect.  I don't like getting calls like this.  Are they just checking to see if this is a working number or are they checking to see if someone is at home...  The National Do Not Call Registry seems to do no good.  I still get these calls and when someone is on the line and I advise them I am registered, they hang up without providing any of the required information the NDNCR requires them to provide.