Apex domains cannot have CNAME records.
Question and response
Question
dig ebgp.fi. NS
Answer
ebgp.fi. 5 NS julio.ns.cloudflare.com.
ebgp.fi. 5 NS maleah.ns.cloudflare.com.
Authority
The response has no authority records.
Additional
julio.ns.cloudflare.com. 1 A 108.162.195.209
julio.ns.cloudflare.com. 1 A 162.159.44.209
julio.ns.cloudflare.com. 1 A 172.64.35.209
maleah.ns.cloudflare.com. 1 A 108.162.194.118
maleah.ns.cloudflare.com. 1 A 162.159.38.118
maleah.ns.cloudflare.com. 1 A 172.64.34.118
julio.ns.cloudflare.com. 1 AAAA 2606:4700:58:0:0:0:a29f:2cd1
julio.ns.cloudflare.com. 1 AAAA 2803:f800:50:0:0:0:6ca2:c3d1
julio.ns.cloudflare.com. 1 AAAA 2a06:98c1:50:0:0:0:ac40:23d1
maleah.ns.cloudflare.com. 1 AAAA 2606:4700:50:0:0:0:a29f:2676
maleah.ns.cloudflare.com. 1 AAAA 2803:f800:50:0:0:0:6ca2:c276
maleah.ns.cloudflare.com. 1 AAAA 2a06:98c1:50:0:0:0:ac40:2276
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0