Apex domains cannot have CNAME records.
Question and response
Question
dig top-nodep.com. NS
Answer
top-nodep.com. 4 NS ns-1145.awsdns-15.org.
top-nodep.com. 4 NS ns-1451.awsdns-53.org.
top-nodep.com. 4 NS ns-459.awsdns-57.com.
top-nodep.com. 4 NS ns-571.awsdns-07.net.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0