_spf.allianz.com has no CNAME records.
Question and response
Question
dig _spf.allianz.com. NS
Answer
The response has no answer records.
Authority
allianz.com. 10774 SOA ns.allianz.com. hostmaster.allianz.de. 2026030603 10800 1800 3600000 300
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0