spf.tpgtelecom.com.au has no CNAME records.
Question and response
Question
dig spf.tpgtelecom.com.au. NS
Answer
The response has no answer records.
Authority
tpgtelecom.com.au. 10800 SOA ns1.tpgi.com.au. dna.tpgi.com.au. 2026022400 3600 3600 604800 10800
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0