Question and response
Question
dig spf.v6send.net. TXT
Answer
spf.v6send.net. 3600 TXT "v=spf1 ip4:118.127.20.128/25 ip4:103.69.164.0/22 ?all"
Authority
v6send.net. 172800 NS ns-1269.awsdns-30.org.
v6send.net. 172800 NS ns-1833.awsdns-37.co.uk.
v6send.net. 172800 NS ns-535.awsdns-02.net.
v6send.net. 172800 NS ns-74.awsdns-09.com.
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0