cz/DNSKEY: No response was received from the server over UDP (tried 2 times). See RFC 1035, Sec. 4.2. (193.29.206.1, 194.0.12.1, 194.0.13.1, 194.0.14.1, 2001:678:1::1, 2001:678:f::1, 2001:678:10::1, 2001:678:11::1, UDP_-_EDNS0_512_D_KN)
Warnings (4)
nic.cz/CDNSKEY has warnings; select the "Denial of existence" DNSSEC option to see them.
g8bn3.nsi5m.nic.cz/A has warnings; select the "Denial of existence" DNSSEC option to see them.
nic.cz/CNAME has warnings; select the "Denial of existence" DNSSEC option to see them.
nic.cz/CDS has warnings; select the "Denial of existence" DNSSEC option to see them.