server.subreg.cz has no NS records.
NS records for this zone are defined at subreg.cz.
NS records for this zone are defined at subreg.cz.
Question and response
Question
dig server.subreg.cz. NS
Answer
The response has no answer records.
Authority
subreg.cz. 1800 SOA ivan.ns.cloudflare.com. dns.cloudflare.com. 2395573990 10000 2400 604800 1800
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0