Apex domains cannot have CNAME records.
Question and response
Question
dig turscar.ie. NS
Answer
turscar.ie. 5 NS b.turscar.ie.
turscar.ie. 5 NS a.turscar.ie.
Authority
The response has no authority records.
Additional
a.turscar.ie. 5 A 46.62.235.105
b.turscar.ie. 5 A 45.58.56.29
a.turscar.ie. 5 AAAA 2a01:4f9:c013:306e:0:0:0:1
b.turscar.ie. 5 AAAA 2602:ffc5:70:0:0:0:1:25f3
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0