Apex domains cannot have CNAME records.
Question and response
Question
dig tanmorix.com. NS
Answer
tanmorix.com. 2 NS ns-658.awsdns-18.net.
tanmorix.com. 2 NS ns-1895.awsdns-44.co.uk.
tanmorix.com. 2 NS ns-491.awsdns-61.com.
tanmorix.com. 2 NS ns-1371.awsdns-43.org.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0