Apex domains cannot have CNAME records.
Question and response
Question
dig datacloud.ro. NS
Answer
datacloud.ro. 5 NS curt.ns.cloudflare.com.
datacloud.ro. 5 NS liz.ns.cloudflare.com.
Authority
The response has no authority records.
Additional
liz.ns.cloudflare.com. 5 A 108.162.192.189
liz.ns.cloudflare.com. 5 A 172.64.32.189
liz.ns.cloudflare.com. 5 A 173.245.58.189
curt.ns.cloudflare.com. 5 A 108.162.193.94
curt.ns.cloudflare.com. 5 A 172.64.33.94
curt.ns.cloudflare.com. 5 A 173.245.59.94
liz.ns.cloudflare.com. 5 AAAA 2606:4700:50:0:0:0:adf5:3abd
liz.ns.cloudflare.com. 5 AAAA 2803:f800:50:0:0:0:6ca2:c0bd
liz.ns.cloudflare.com. 5 AAAA 2a06:98c1:50:0:0:0:ac40:20bd
curt.ns.cloudflare.com. 5 AAAA 2606:4700:58:0:0:0:adf5:3b5e
curt.ns.cloudflare.com. 5 AAAA 2803:f800:50:0:0:0:6ca2:c15e
curt.ns.cloudflare.com. 5 AAAA 2a06:98c1:50:0:0:0:ac40:215e
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0