Apex domains cannot have CNAME records.
Question and response
Question
dig enovation.ie. NS
Answer
enovation.ie. 5 NS ns2.enovation.ie.
enovation.ie. 5 NS ns1.enovationsolutions.com.
enovation.ie. 5 NS ns1.enovation.ie.
enovation.ie. 5 NS ns2.enovationsolutions.com.
Authority
The response has no authority records.
Additional
ns1.enovation.ie. 5 A 212.78.228.10
ns2.enovation.ie. 5 A 162.13.43.83
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0