Question and response
Question
dig _spf.telstra.com.au. TXT
Answer
_spf.telstra.com.au. 900 TXT "v=spf1 ip4:203.35.135.0/24 ip4:203.35.82.0/24 ~all"
Authority
telstra.com.au. 86400 NS a18-64.akam.net.
telstra.com.au. 86400 NS a2-65.akam.net.
telstra.com.au. 86400 NS a28-66.akam.net.
telstra.com.au. 86400 NS a3-65.akam.net.
telstra.com.au. 86400 NS adns05.bigpond.com.
telstra.com.au. 86400 NS adns06.bigpond.com.
telstra.com.au. 86400 NS a1-185.akam.net.
telstra.com.au. 86400 NS a11-66.akam.net.
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0