Apex domains cannot have CNAME records.
Question and response
Question
dig tyzxf.com. NS
Answer
tyzxf.com. 5 NS ns-1059.awsdns-04.org.
tyzxf.com. 5 NS ns-1909.awsdns-46.co.uk.
tyzxf.com. 5 NS ns-995.awsdns-60.net.
tyzxf.com. 5 NS ns-1360.awsdns-42.org.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0