Question and response
Question
dig spf.ctitech.net.br. TXT
Answer
spf.ctitech.net.br. 3600 TXT "v=spf1 ip4:187.73.128.0/20 ip4:189.38.17.0/24 ip4:189.38.22.0/24 ip4:189.38.27.0/24 ip4:189.38.28.0/24 ip4:200.220.146.0/24 ip4:200.220.157.0/24 ip4:186.193.224.0/20 ip4:177.190.192.0/20 ip4:104.251.215.11 ip6:2804:234:8290::/64 include:spf.skymail.net.br" " -all"
Authority
spf.ctitech.net.br. 3600 NS dns1.ctitech.net.br.
spf.ctitech.net.br. 3600 NS dns2.ctitech.net.br.
spf.ctitech.net.br. 3600 NS dns4.ctitech.net.br.
spf.ctitech.net.br. 3600 NS dns3.ctitech.net.br.
Additional
dns1.ctitech.net.br. 3600 A 177.190.207.234
dns2.ctitech.net.br. 3600 A 186.193.234.22
dns3.ctitech.net.br. 3600 A 186.193.225.228
dns4.ctitech.net.br. 3600 A 104.251.215.11
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0