Apex domains cannot have CNAME records.
Question and response
Question
dig televork.ee. NS
Answer
televork.ee. 4 NS dns.televork.ee.
televork.ee. 4 NS dns2.televork.ee.
Authority
The response has no authority records.
Additional
dns.televork.ee. 4 A 95.153.47.100
dns2.televork.ee. 4 A 81.21.241.254
dns.televork.ee. 4 AAAA 2a01:1b8:0:10:0:0:0:1
dns2.televork.ee. 4 AAAA 2a01:1b8:ffff:fffe:0:0:0:1
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0