Just received a call from this number. I have had a number of phantom calls, recently, from various numbers which I have blocked. These spammers are able to generate new numbers all the time. Someone has just learned this trick and is trying it out, I would say.
Also got a call, 5/12/16, at 2:25PM, EDT (first time). I would get a call blocker, but that's like throwing $$$ down a rabbit hole. What's the point? I'd be blocking calls, all day. I just don't answer and save the money. I've also let friends and family know to call me on my cell, where I can block the spammers. I've turned down the ringer and voila, no annoyances. Scammers can call all day. But, I'm loathe to give up my landline, for some reason. That'll be the next thing to consider.