Got a call from this number yesterday (5/31/2017) at around 4 PM. Caller ID showed up as "Out of area 1-720-306-0851". Let it roll thru to voice mail. Whoever it was they didn't leave any message. If you call me and hang up without leaving a message, you get blocked. So ... I added this latest number to my phone's Call Block List. One strike, and you're out!