Apex domains cannot have CNAME records.
Question and response
Question
dig hangar.ro. NS
Answer
hangar.ro. 5 NS ns1.hangarhosting.net.
hangar.ro. 5 NS ns3.hangarhosting.net.
hangar.ro. 5 NS ns2.hangarhosting.net.
Authority
The response has no authority records.
Additional
ns1.hangarhosting.net. 3 A 188.209.212.101
ns2.hangarhosting.net. 3 A 93.113.28.5
ns3.hangarhosting.net. 3 A 93.113.28.103
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0