Apex domains cannot have CNAME records.
Question and response
Question
dig datameck.com. NS
Answer
datameck.com. 2 NS ns1.datameck.com.
datameck.com. 2 NS ns2.datameck.com.
Authority
The response has no authority records.
Additional
ns1.datameck.com. 2 A 185.9.156.35
ns2.datameck.com. 2 A 185.9.156.55
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0