Just got a call from this number too.  My caller id said Denver Post.  I wrote a letter to the editor a couple of weeks ago but not sure if they are related.

they called me too, said denver post on the I.D. just silence when i answered. Denver post should be a 720 or 303 prefix not 781 ?????

Got the same call.  No one there when I answered.  Caller ID also said Denver Post.  I happen to live in Denver.  Maybe I should contact the Post and tell the newspaper they are using their name!

I get these calls too, despite being on the do-not-call list. I work nights, so I'm either asleep (or was before they called) or working, so I get no ID, but they never leave a message. It seems nothing will stop these people!!!