Apex domains cannot have CNAME records.
Question and response
Question
dig trozzvalin.net. NS
Answer
trozzvalin.net. 5 NS ns2.trozzvalin.net.
trozzvalin.net. 5 NS ns1.trozzvalin.net.
Authority
The response has no authority records.
Additional
ns1.trozzvalin.net. 5 A 57.129.147.42
ns2.trozzvalin.net. 5 A 51.75.166.180
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0