d.inet.ns01.eu has no CNAME records.
Question and response
Question
dig d.inet.ns01.eu. NS
Answer
The response has no answer records.
Authority
inet.ns01.eu. 10688 SOA a.ns14.net. support.inet.de. 2023082901 43200 7200 1209600 86400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0