Question and response
Question
dig _netblocks5.mk.de. TXT
Answer
_netblocks5.mk.de. 300 TXT "v=spf1 ip4:212.90.141.0/24 ~all"
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0