Question and response
Question
dig spf1.openinvoice.com. TXT
Answer
spf1.openinvoice.com. 300 TXT "v=spf1 ip4:149.72.218.85 ip4:167.89.37.75 ~all"
Authority
openinvoice.com. 172800 NS ns-1102.awsdns-09.org.
openinvoice.com. 172800 NS ns-1856.awsdns-40.co.uk.
openinvoice.com. 172800 NS ns-405.awsdns-50.com.
openinvoice.com. 172800 NS ns-902.awsdns-48.net.
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0