ns1.scan-plus.com has no CNAME records.
Question and response
Question
dig ns1.scan-plus.com. NS
Answer
The response has no answer records.
Authority
scan-plus.com. 2563 SOA ns1.scan-plus.com. hostmaster.scanplus.de. 2025120801 86400 7200 2419200 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0