212.158.90.185.ediscom.de has no CNAME records.
Question and response
Question
dig 212.158.90.185.ediscom.de. NS
Answer
The response has no answer records.
Authority
ediscom.de. 73 SOA ns77.domaincontrol.com. dns.jomax.net. 2026020300 28800 7200 604800 600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0