tk zone: The server(s) were not responsive to queries over UDP. See RFC 1035, Sec. 4.2. (194.0.38.1, 194.0.40.1, 2001:678:50::1, 2001:678:54::1, 2001:678:58::1, 2001:678:5c::1)
tk zone: There was an error resolving the following NS name(s) to address(es): a.ns.tk, b.ns.tk
tk/DNSKEY: No response was received from the server over UDP (tried 12 times). See RFC 1035, Sec. 4.2. (194.0.39.1, 194.0.41.1, UDP_-_NOEDNS_)
tk/DNSKEY: No response was received from the server over UDP (tried 4 times). See RFC 1035, Sec. 4.2. (194.0.39.1, 194.0.41.1, UDP_-_EDNS0_512_D_KN)
zabbix.hydrogenx.tk/A: No response was received from the server over UDP (tried 12 times). See RFC 1035, Sec. 4.2. (194.0.39.1, 194.0.41.1, UDP_-_NOEDNS_)
zabbix.hydrogenx.tk/AAAA: No response was received from the server over UDP (tried 12 times). See RFC 1035, Sec. 4.2. (194.0.39.1, 194.0.41.1, UDP_-_NOEDNS_)
tk/CNAME has errors; select the "Denial of existence" DNSSEC option to see them.