Question and response
Question
dig _netblocks.megamailservers.com. TXT
Answer
_netblocks.megamailservers.com. 86400 TXT "v=spf1 ip4:216.251.32.0/20 ip4:209.29.52.0/24 ip4:69.49.96.0/19 ip4:64.29.144.0/20 ip4:69.156.240.0/21 ip4:209.235.128.0/19 ip4:66.175.63.0/24 ip4:66.175.55.0/24 ip4:91.136.10.0/24 ip4:216.55.154.0/24 -all"
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0