_spf4.pixum.services has no CNAME records.
Question and response
Question
dig _spf4.pixum.services. NS
Answer
The response has no answer records.
Authority
pixum.services. 178 SOA ns-cloud-b1.googledomains.com. cloud-dns-hostmaster.google.com. 1 21600 3600 259200 300
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0