Apex domains cannot have CNAME records.
Question and response
Question
dig trifle.net. NS
Answer
trifle.net. 5 NS ns.apex.dp.ua.
trifle.net. 5 NS ns.trifle.net.
Authority
The response has no authority records.
Additional
ns.apex.dp.ua. 5 A 173.249.8.143
ns.trifle.net. 5 A 195.24.156.222
ns.apex.dp.ua. 5 AAAA 2a02:c207:2014:7560:0:0:0:143
ns.trifle.net. 5 AAAA 2a01:750:1:222:0:0:0:2
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0