Apex domains cannot have CNAME records.
Question and response
Question
dig snr.ro. NS
Answer
snr.ro. 5 NS ns1.snr.ro.
snr.ro. 5 NS ns1.drcj.ro.
snr.ro. 5 NS ns2.snr.ro.
Authority
The response has no authority records.
Additional
ns1.snr.ro. 5 A 80.97.20.3
ns2.snr.ro. 5 A 80.97.20.4
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0