Maybe I triggered something in vegas last trip because I started receiving phone calls from that area code and then multiple calls from different states since. I don't answer. They don't leave a message. I probably won't bother blocking any numbers either because they just keep changing. Today it's this number but I have received calls from Temecula CA, Medford, OR, AZ. I suppose my number has been sold to various companies through some dumb mistake I made in giving it out. Yes, I've been registered with DNC. Annoying.