Question and response
Question
dig _netblocks.heureka.cz. TXT
Answer
_netblocks.heureka.cz. 360 TXT "v=spf1 ip4:185.68.68.0/22 include:_omax.heureka.cz include:_spf.google.com include:_spf.salesforce.com -all"
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0