I actually had to purchase phones that block more than 100 numbers. Most of these numbers are spoofed. I get calls from the number "1", as well. NOBODY has that phone number! The do not call registry is not working as it should. I gave up reporting all of these kooks a LONG time ago as it was way too time consuming to do so. Besides, how would they even go about investigating spoofed numbers. That's an FBI and FCC issue and I don't think it's on their list of priorities.
Since this appears to be a new listing, I assume I am on a list for Scammers-in-Training. They probably still wet the bed at night. But I do for them what I do for real professional scammers. Never answer the phone (I do ask for a message to be left) and block the number. Get yourself a Panasonic phone system that blocks 250 numbers. Check amazon.com for one. A nice feature is when the jerks call back, there is no ring to irritate you.