Apex domains cannot have CNAME records.
Question and response
Question
dig anchitex.com. NS
Answer
anchitex.com. 5 NS ns-1287.awsdns-32.org.
anchitex.com. 5 NS ns-682.awsdns-21.net.
anchitex.com. 5 NS ns-13.awsdns-01.com.
anchitex.com. 5 NS ns-1141.awsdns-14.org.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0