spf-all.webx.cz has no NS records.
NS records for this zone are defined at webx.cz.
NS records for this zone are defined at webx.cz.
Question and response
Question
dig spf-all.webx.cz. NS
Answer
The response has no answer records.
Authority
webx.cz. 900 SOA ns.webx.cz. hostmaster.webx.cz. 2026031301 10800 1800 1209600 7200
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0