Apex domains cannot have CNAME records.
Question and response
Question
dig aureon.com. NS
Answer
aureon.com. 4 NS ns1d.aureon.com.
aureon.com. 4 NS ns3k.aureon.com.
Authority
The response has no authority records.
Additional
ns1d.aureon.com. 4 A 167.142.67.142
ns3k.aureon.com. 4 A 167.142.67.146
ns1d.aureon.com. 4 AAAA 2001:5f8:a:3:0:0:0:1
ns3k.aureon.com. 4 AAAA 2001:5f8:b:3:0:0:0:1
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0