Question and response
Question
dig mx.ispn.net. TXT
Answer
mx.ispn.net. 600 TXT "v=spf1 ip4:64.35.208.0/20 ip6:2607:5800::/32 -all"
Authority
ispn.net. 86400 NS ns1.ispn.net.
ispn.net. 86400 NS ns2.ispn.net.
Additional
ns1.ispn.net. 86400 A 64.35.208.1
ns2.ispn.net. 86400 A 64.35.214.1
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0