Question and response
Question
dig app.luadns.com. TXT
Answer
app.luadns.com. 300 TXT "v=spf1 a mx a:api.luadns.com a:app.luadns.com -all"
Authority
luadns.com. 86400 NS ns1.linode.com.
luadns.com. 86400 NS ns1.luadns.net.
luadns.com. 86400 NS ns2.linode.com.
luadns.com. 86400 NS ns2.luadns.net.
luadns.com. 86400 NS ns3.luadns.net.
luadns.com. 86400 NS ns4.luadns.net.
Additional
. 32768 OPT ; payload 512, xrcode 0, version 0, flags 32768