I did report this number to the Do Not Call Registry and this is what I got:
We Are Unable to Accept Your Complaint
The phone number 720-204-1286 was registered on January 01, 2008. Companies may call you for up to 31 days after that date. You may file a complaint if a company calls you after February 01, 2008.
Note: If your area code has recently been changed and you receive the message "Grace period has not expired" when you attempt to file a complaint, submit your complaint under your old area code.
WTF? What is the use of that stupid do not call registry? I say everyone should report that number again and again and again. In the meantime, I think I'll write this number on every bathroom wall I pass.
I got a calll from this number and all my caller ID says is COLORADO CALL. I tried calling back but all I got was "number cannot be completed as dialed." I will get to the bottom of this and then let everyone know.