mail.premium-vserver.net has no CNAME records.
Question and response
Question
dig mail.premium-vserver.net. NS
Answer
The response has no answer records.
Authority
premium-vserver.net. 600 SOA ns3.ip-projects.de. info.ip-projects.de. 2025031302 10000 7200 1209600 600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0