Apex domains cannot have CNAME records.
Question and response
Question
dig fmsend.net. NS
Answer
fmsend.net. 5 NS ns-585.awsdns-09.net.
fmsend.net. 5 NS ns-1083.awsdns-07.org.
fmsend.net. 5 NS ns-1995.awsdns-57.co.uk.
fmsend.net. 5 NS ns-372.awsdns-46.com.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0