Question and response
Question
dig _spf0000000.tangocard.com. TXT
Answer
_spf0000000.tangocard.com. 300 TXT "v=spf1 ip4:167.89.75.126 ip4:167.89.75.136 ip4:167.89.75.164 ip4:40.107.0.0/16 ip4:52.100.0.0/15 ip4:52.102.0.0/16 ip4:52.103.0.0/17 ip4:104.47.0.0/17 ip4:52.9.244.10/32 ip4:63.128.21.0/24 ip4:3.210.190.0/24 ip4:54.174.52.0/24 ip4:54.174.57.0/24 ip4:54.17" "4.59.0/24 ip4:54.174.60.0/23 ip4:54.174.63.0/24 ip4:173.194.0.0/16 ip4:129.149.6.0/25 ip4:138.1.170.0/24 ip4:162.88.24.0/23 ip4:192.29.72.0/25 include:_spf0000001.tangocard.com ~all"
Authority
_spf0000000.tangocard.com. 172800 NS ns-1502.awsdns-59.org.
_spf0000000.tangocard.com. 172800 NS ns-172.awsdns-21.com.
_spf0000000.tangocard.com. 172800 NS ns-2012.awsdns-59.co.uk.
_spf0000000.tangocard.com. 172800 NS ns-891.awsdns-47.net.
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0