Apex domains cannot have CNAME records.
Question and response
Question
dig costsaversdirect.com. NS
Answer
costsaversdirect.com. 5 NS ns-632.awsdns-15.net.
costsaversdirect.com. 5 NS ns-1075.awsdns-06.org.
costsaversdirect.com. 5 NS ns-1464.awsdns-55.org.
costsaversdirect.com. 5 NS ns-286.awsdns-35.com.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0