_spf.staeher.net has no CNAME records.
Question and response
Question
dig _spf.staeher.net. NS
Answer
The response has no answer records.
Authority
staeher.net. 3600 SOA a.dns.staeher.net. dns-admin.staeher.net. 2025020100 10800 3600 1814400 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0