Apex domains cannot have CNAME records.
Question and response
Question
dig thejaas.com. NS
Answer
thejaas.com. 5 NS ns-174.awsdns-21.com.
thejaas.com. 5 NS ns-588.awsdns-09.net.
thejaas.com. 5 NS ns-299.awsdns-37.com.
thejaas.com. 5 NS ns-1682.awsdns-18.co.uk.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0