spf.hosting.de has no CNAME records.
Question and response
Question
dig spf.hosting.de. NS
Answer
The response has no answer records.
Authority
hosting.de. 632 SOA ns1.hosting.de. info.hosting.de. 2026022101 14400 3600 604800 900
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0