Calls...never leaves a message and I don't answer unknown numbers..CID lists "COLORADO" & the phone number

Calls, never leaves messages, has called four times today about every hour and a half.

got a call from that number and sounds like a scam for any one over the age of 50.  AARP> id protection service.

Doesn't leave a message

You can thank AARP for most of the different robo calls, spam emails and junk postal mail you receive.   AARP is known for selling members information.   I never received any of those things until  a family member bought me a subscription to AARP for a birthday gift.  It didn't take long before my postal mail (advertisements) began.  Next was the Robo calls.

I receive approximately 10 calls a day from companies trying to sell me something.