Apex domains cannot have CNAME records.
Question and response
Question
dig itmfs.com. NS
Answer
itmfs.com. 4 NS ns-104.awsdns-13.com.
itmfs.com. 4 NS ns-2001.awsdns-58.co.uk.
itmfs.com. 4 NS ns-1480.awsdns-57.org.
itmfs.com. 4 NS ns-1002.awsdns-61.net.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0