sb.hpress.de has no CNAME records.
Question and response
Question
dig sb.hpress.de. NS
Answer
The response has no answer records.
Authority
hpress.de. 10800 SOA ns1.hostpress.de. info.hostpress.de. 2025120417 43200 7200 1209600 86400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0