Apex domains cannot have CNAME records.
Question and response
Question
dig cirion.live. NS
Answer
cirion.live. 4 NS pdns2.cirion.live.
cirion.live. 4 NS pdns3.cirion.live.
cirion.live. 4 NS pdns1.cirion.live.
Authority
The response has no authority records.
Additional
pdns1.cirion.live. 4 A 189.125.184.135
pdns2.cirion.live. 4 A 189.125.184.151
pdns3.cirion.live. 4 A 189.125.184.167
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0