Apex domains cannot have CNAME records.
Question and response
Question
dig encon.ro. NS
Answer
encon.ro. 5 NS ns4.cyberfolks.ro.
encon.ro. 5 NS ns3.cyberfolks.ro.
encon.ro. 5 NS ns1.cyberfolks.ro.
encon.ro. 5 NS ns2.cyberfolks.ro.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0