Apex domains cannot have CNAME records.
Question and response
Question
dig crsend.com. NS
Answer
crsend.com. 5 NS ns-803.awsdns-36.net.
crsend.com. 5 NS ns-1578.awsdns-05.co.uk.
crsend.com. 5 NS ns-214.awsdns-26.com.
crsend.com. 5 NS ns-1148.awsdns-15.org.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0