Question and response
Question
dig _netblocks03.imdlv.net. TXT
Answer
_netblocks03.imdlv.net. 1800 TXT "v=spf1 ip4:51.15.137.45/32 ip4:212.47.240.255/32 ip4:51.15.238.144/32 ip4:163.172.152.139/32 ip4:51.158.96.194/32 ip4:163.172.134.199/32 -all"
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0