Question and response
Question
dig mx.nic.cz. TXT
Answer
mx.nic.cz. 1800 TXT "v=spf1 include:_v4nets.nic.cz include:_v6nets.nic.cz ~all"
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0