Apex domains cannot have CNAME records.
Question and response
Question
dig domain2020.com. NS
Answer
domain2020.com. 5 NS ns1.wpdns.com.
domain2020.com. 5 NS ns2.wpdns.com.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0