Who called from 7204104587

Does anyone know whose calling from this number 720-410-4587?

I have no idea.  I blocked my phone# with *67 then dialed the area code and number. A Caucasian man answered.  I listened to him say hello 3x, confirming I have no idea who it is that would call my phone after 9pm CST, then without saying a word.  I hung up!