Apex domains cannot have CNAME records.
Question and response
Question
dig dbweb.ee. NS
Answer
dbweb.ee. 5 NS ns1.dbweb.ee.
dbweb.ee. 5 NS ns2.dbweb.ee.
Authority
The response has no authority records.
Additional
ns1.dbweb.ee. 5 A 81.21.253.2
ns2.dbweb.ee. 5 A 81.21.253.3
ns1.dbweb.ee. 5 AAAA 2a01:1b8:2:14:0:0:0:2
ns2.dbweb.ee. 5 AAAA 2a01:1b8:2:14:0:0:0:3
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0