Apex domains cannot have CNAME records.
Question and response
Question
dig cia-cpl-004.cianet.ro. NS
Answer
cia-cpl-004.cianet.ro. 5 NS ns01.cianet.ro.
Authority
The response has no authority records.
Additional
ns01.cianet.ro. 5 A 89.42.41.45
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0