umleitung.test.de has no CNAME records.
Question and response
Question
dig umleitung.test.de. NS
Answer
The response has no answer records.
Authority
test.de. 443 SOA dns.iwelt-ag.net. domainmaster.iwelt-ag.net. 2026022704 900 1800 2592000 600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0