f.spf.panthur.com.au has no CNAME records.
Question and response
Question
dig f.spf.panthur.com.au. NS
Answer
The response has no answer records.
Authority
spf.panthur.com.au. 10751 SOA ns1.panthur.net.au. servers.panthur.com. 2020022412 3600 1800 1209600 86400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0