Apex domains cannot have CNAME records.
Question and response
Question
dig 0554800.com. NS
Answer
0554800.com. 1 NS ns-1425.awsdns-50.org.
0554800.com. 1 NS ns-87.awsdns-10.com.
0554800.com. 1 NS ns-356.awsdns-44.com.
0554800.com. 1 NS ns-480.awsdns-60.com.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0