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.
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.