This number called me this morning at 11:58 AM.  I did not answer and no voice mail was left by the caller.  My callier ID read the ten digit number as the name of the caller.

Some sort of gutter/siding company offering free estimates.

Offering a special on home window cleaning.

Got a call from this number yesterday (6/21/2016) at around 5 PM.  Caller ID showed "Out of area 1-720-221-3822".  As always (for unknown callers) I let it roll thru to voice mail.  They left no message.  I later blocked my CID with *67, and then called the number back.  Got a recorded message that I had called "Spark Home Services".  Checked for that company name with both the Better Business Bureau (where they have a rating of "F"), and on Yelp (where the only reviews posted are all 1-star).  That's all I need to know.  I've added their number now to my phone's Call Block List, so that they can't get thru to me anymore.