Received a call from 636-140-0347 today with CID of "NAME NOT FOUND".  I did not pick up, since I did not recognize the number.  Searching for Area Code (636) and prefix (140), I found 636 to be in Missouri, but none of the 345 prefixes tied to that area code start with 1.  I am pretty sure there are no numbers in the US that have a prefix that starts with 1 -- This is bound to be a spoofed number…  Now it is blocked on my phone!