ns.od.ua has no CNAME records.
Question and response
Question
dig ns.od.ua. NS
Answer
The response has no answer records.
Authority
od.ua. 3600 SOA ns.od.ua. hostmaster.ns.od.ua. 2026032043 28800 7200 604800 7200
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0