Question and response
Question
dig _nb1.emailcampaigns.net. TXT
Answer
_nb1.emailcampaigns.net. 3600 TXT "v=spf1 ip4:216.24.224.0/20 ip4:216.27.12.144/28 ip4:216.27.14.0/26 ip4:216.27.14.64/27 ip4:216.27.8.32/28 ip4:216.27.20.128/27 ip4:216.27.22.160/27 ip4:216.27.22.192/27 ip4:185.131.228.0/25 ip4:185.131.228.128/25 ip4:185.131.229.0/25 -all"
Authority
emailcampaigns.net. 172800 NS ns-1321.awsdns-37.org.
emailcampaigns.net. 172800 NS ns-1797.awsdns-32.co.uk.
emailcampaigns.net. 172800 NS ns-389.awsdns-48.com.
emailcampaigns.net. 172800 NS ns-640.awsdns-16.net.
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0