vhost42.pubnix.net has no CNAME records.
Question and response
Question
dig vhost42.pubnix.net. NS
Answer
The response has no answer records.
Authority
pubnix.net. 10800 SOA ns1.pubnix.net. root.pubnix.net. 2025085222 3600 900 2419200 86400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0