Apex domains cannot have CNAME records.
Question and response
Question
dig blic.net. NS
Answer
blic.net. 5 NS phobos.blic.net.
blic.net. 5 NS sirius.blic.net.
Authority
The response has no authority records.
Additional
phobos.blic.net. 5 A 217.23.192.9
sirius.blic.net. 5 A 217.23.207.2
phobos.blic.net. 5 AAAA 2a00:1a98:2:1:0:0:192:9
sirius.blic.net. 5 AAAA 2a00:1a98:0:1:0:0:207:2
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0