Who called from 2020086753

This a fake/spoofed number. In the North American Numbering Plan, area codes and telephone exchanges do not start with a 0 or 1.

The international calling code for the USA is 1, so yes, it is plausible for a "North American" number to display with a 1.

The rules for numbering NPAs do not permit the digits 0 and 1 as the leading digit of an area code, as is the case for central office codes.
https://en.wikipedia.org/wiki/List_of_North_A ... Plan_area_codes
https://en.wikipedia.org/wiki/North_American_Numbering_Plan

Received calls all day from this number.  Tried to call it and get a message that the number is not valid.  I can't even ask to be taken off call list!

3 calls in last 24 hours.......no response on other end