Apex domains cannot have CNAME records.
Question and response
Question
dig tr. NS
Answer
tr. 1 NS ns72.ns.tr.
tr. 1 NS ns73.ns.tr.
tr. 1 NS ns71.ns.tr.
tr. 1 NS ns61.ns.tr.
tr. 1 NS ns44.ns.tr.
tr. 1 NS ns43.ns.tr.
tr. 1 NS ns74.ns.tr.
Authority
The response has no authority records.
Additional
ns43.ns.tr. 58979 A 185.7.0.4
ns44.ns.tr. 58979 A 185.7.0.5
ns61.ns.tr. 58979 A 206.51.254.1
ns71.ns.tr. 58979 A 185.67.32.53
ns72.ns.tr. 58979 A 40.68.114.66
ns73.ns.tr. 58979 A 31.145.253.159
ns74.ns.tr. 58979 A 31.145.253.160
ns61.ns.tr. 58979 AAAA 2620:171:804:ad2:0:0:0:1
ns72.ns.tr. 58979 AAAA 2603:1020:201:10:0:0:0:111
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0