ns2.zone.ee has no CNAME records.
Question and response
Question
dig ns2.zone.ee. NS
Answer
The response has no answer records.
Authority
zone.ee. 2786 SOA ns.zone.eu. hostmaster.zone.eu. 2026021604 10800 1800 2419200 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0