Apex domains cannot have CNAME records.
Question and response
Question
dig kinetic-energy.eu. NS
Answer
kinetic-energy.eu. 5 NS ns2.hostico.ro.
kinetic-energy.eu. 5 NS ns1.hostico.ro.
kinetic-energy.eu. 5 NS ns4.hostico.ro.
kinetic-energy.eu. 5 NS ns3.hostico.ro.
Authority
The response has no authority records.
Additional
ns1.hostico.ro. 5 A 188.241.222.5
ns2.hostico.ro. 5 A 188.212.37.253
ns3.hostico.ro. 5 A 89.44.200.19
ns4.hostico.ro. 5 A 77.81.2.9
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0