gerch.int-dyn.de has no CNAME records.
Question and response
Question
dig gerch.int-dyn.de. NS
Answer
The response has no answer records.
Authority
int-dyn.de. 57 SOA ns.inttech.de. support.int-tech.de. 2026030564 10000 1800 604800 180
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0