Apex domains cannot have CNAME records.
Question and response
Question
dig wlyl009.com. NS
Answer
wlyl009.com. 4 NS ns-556.awsdns-05.net.
wlyl009.com. 4 NS ns-468.awsdns-58.com.
wlyl009.com. 4 NS ns-1570.awsdns-04.co.uk.
wlyl009.com. 4 NS ns-1061.awsdns-04.org.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0