Apex domains cannot have CNAME records.
Question and response
Question
dig wdp-gazduire.ro. NS
Answer
wdp-gazduire.ro. 5 NS ns4.wdp-gazduire.ro.
wdp-gazduire.ro. 5 NS ns3.wdp-gazduire.ro.
wdp-gazduire.ro. 5 NS ns1.wdp-gazduire.ro.
wdp-gazduire.ro. 5 NS ns2.wdp-gazduire.ro.
Authority
The response has no authority records.
Additional
ns1.wdp-gazduire.ro. 5 A 89.42.216.2
ns2.wdp-gazduire.ro. 5 A 86.106.30.242
ns3.wdp-gazduire.ro. 5 A 89.42.216.3
ns4.wdp-gazduire.ro. 5 A 188.209.214.242
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0