dns2.ciach.net has no CNAME records.
Question and response
Question
dig dns2.ciach.net. NS
Answer
The response has no answer records.
Authority
ciach.net. 3600 SOA www.ciach.net. root.www.ciach.net. 2026020401 3600 900 1209600 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0