server4.enco-gera.de has no CNAME records.
Question and response
Question
dig server4.enco-gera.de. NS
Answer
The response has no answer records.
Authority
enco-gera.de. 10800 SOA nsa2.schlundtech.de. edv.enco-gera.de. 2025102003 43200 7200 1209600 86400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0