arpa zone: The server(s) were not responsive to queries over UDP. See RFC 1035, Sec. 4.2. (192.33.4.12)
arpa/DS: No response was received from the server over UDP (tried 12 times). See RFC 1035, Sec. 4.2. (192.33.4.12, UDP_-_NOEDNS_)
Warnings (8)
arpa/DNSKEY: The server appears to support DNS cookies but did not return a COOKIE option. See RFC 7873, Sec. 5.2.3. (2001:500:2f::f, UDP_-_EDNS0_512_D_KN)
ip6.arpa/DS (alg 8, id 13880): The server appears to support DNS cookies but did not return a COOKIE option. See RFC 7873, Sec. 5.2.3. (2001:500:2f::f, UDP_-_EDNS0_4096_D_KN)
ip6.arpa/DS (alg 8, id 13880): The server appears to support DNS cookies but did not return a COOKIE option. See RFC 7873, Sec. 5.2.3. (2001:500:2f::f, UDP_-_EDNS0_4096_D_KN)
ip6.arpa/DS (alg 8, id 45094): The server appears to support DNS cookies but did not return a COOKIE option. See RFC 7873, Sec. 5.2.3. (2001:500:2f::f, UDP_-_EDNS0_4096_D_KN)
ip6.arpa/DS (alg 8, id 45094): The server appears to support DNS cookies but did not return a COOKIE option. See RFC 7873, Sec. 5.2.3. (2001:500:2f::f, UDP_-_EDNS0_4096_D_KN)
ip6.arpa/DS (alg 8, id 64060): The server appears to support DNS cookies but did not return a COOKIE option. See RFC 7873, Sec. 5.2.3. (2001:500:2f::f, UDP_-_EDNS0_4096_D_KN)
ip6.arpa/DS (alg 8, id 64060): The server appears to support DNS cookies but did not return a COOKIE option. See RFC 7873, Sec. 5.2.3. (2001:500:2f::f, UDP_-_EDNS0_4096_D_KN)
ip6.arpa/DS has warnings; select the "Denial of existence" DNSSEC option to see them.