Question and response
Question
dig spf3.chargify.com. TXT
Answer
spf3.chargify.com. 300 TXT "v=spf1 ip4:139.180.17.0/24 ip4:143.244.80.0/20 ip4:158.247.16.0/20 ip4:198.2.128.0/24 ip4:198.2.132.0/22 ip4:198.2.136.0/23 ip4:198.2.145.0/24 ip4:198.2.186.0/23 ip4:205.201.131.128/25 ip4:205.201.134.128/25 ip4:205.201.136.0/23 ip4:205.201.139.0/24 ~all"
Authority
chargify.com. 172800 NS ns-11.awsdns-01.com.
chargify.com. 172800 NS ns-1231.awsdns-25.org.
chargify.com. 172800 NS ns-1841.awsdns-38.co.uk.
chargify.com. 172800 NS ns-974.awsdns-57.net.
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0