ns.te.ua has no CNAME records.
Question and response
Question
dig ns.te.ua. NS
Answer
The response has no answer records.
Authority
te.ua. 3600 SOA ns.te.ua. hostmaster.te.ua. 2022088006 3636 1212 1814400 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0