Question and response
Question
dig _spf.seismic.com. TXT
Answer
_spf.seismic.com. 600 TXT "v=spf1 include:_netblock1.seismic.com include:_netblock2.seismic.com -all"
Authority
seismic.com. 172800 NS ns-1254.awsdns-28.org.
seismic.com. 172800 NS ns-1829.awsdns-36.co.uk.
seismic.com. 172800 NS ns-460.awsdns-57.com.
seismic.com. 172800 NS ns-611.awsdns-12.net.
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0