Question and response
Question
dig spf.inext.cz. TXT
Answer
spf.inext.cz. 3600 TXT "v=spf1 ip4:212.111.0.0/24 ip6:2a00:e580:4::/64 a:relay1.inext.cz ~all"
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0