Apex domains cannot have CNAME records.
Question and response
Question
dig unicsbg.net. NS
Answer
unicsbg.net. 4 NS dns2.globcom.net.
unicsbg.net. 4 NS dns1.globcom.net.
Authority
The response has no authority records.
Additional
dns1.globcom.net. 4 A 185.20.88.1
dns2.globcom.net. 4 A 185.20.88.2
dns1.globcom.net. 4 AAAA 2a00:4e60:0:0:0:0:0:1
dns2.globcom.net. 4 AAAA 2a00:4e60:0:0:0:0:0:2
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0