ubutrix.mynet.it has no CNAME records.
Question and response
Question
dig ubutrix.mynet.it. NS
Answer
The response has no answer records.
Authority
mynet.it. 300 SOA ns2.mynet.it. hostmaster.mynet.it. 2026030702 86400 7200 2592000 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0