Apex domains cannot have CNAME records.
Question and response
Question
dig rev.kli.lt. NS
Answer
rev.kli.lt. 5 NS ns1.kli.lt.
rev.kli.lt. 5 NS ns2.kli.lt.
Authority
The response has no authority records.
Additional
ns1.kli.lt. 5 A 46.36.66.66
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0