ip6.arpa zone: The server(s) were not responsive to queries over UDP. See RFC 1035, Sec. 4.2. (2620:37:e000::53)
ip6.arpa/NS: No response was received from the server over UDP (tried 12 times). See RFC 1035, Sec. 4.2. (2620:37:e000::53, UDP_-_NOEDNS_)
ip6.arpa/SOA: DNSSEC was effectively downgraded because no response was received from the server over UDP (tried 11 times) with EDNS enabled. See RFC 6891, Sec. 7, RFC 2671, Sec. 5.3. (2001:43f8:110::11, UDP_-_NOEDNS_)
ip6.arpa/SOA: No response was received from the server over TCP (tried 3 times). See RFC 1035, Sec. 4.2. (2001:43f8:110::11, TCP_-_EDNS0_4096_D_N)
ip6.arpa/SOA: No response was received from the server over UDP (tried 11 times) until EDNS was disabled (however, this server appeared to respond legitimately to other queries with EDNS enabled). See RFC 6891, Sec. 6.2.6. (2001:43f8:110::11, UDP_-_EDNS0_4096_D_KN)
ip6.arpa/SOA: The DNSSEC records necessary to validate the response could not be retrieved from the server. See RFC 4035, Sec. 3.1.1, RFC 4035, Sec. 3.1.3. (2001:43f8:110::11, UDP_-_EDNS0_4096_D_KN)
Warnings (4)
ip6.arpa/SOA: No response was received until the UDP payload size was decreased, indicating that the server might be attempting to send a payload that exceeds the path maximum transmission unit (PMTU) size. See RFC 6891, Sec. 6.2.6. (2001:43f8:110::11, UDP_-_EDNS0_4096_D_KN_0x20)
ip6.arpa/TXT has warnings; select the "Denial of existence" DNSSEC option to see them.
ip6.arpa/NSEC3PARAM has warnings; select the "Denial of existence" DNSSEC option to see them.
ip6.arpa/CNAME has warnings; select the "Denial of existence" DNSSEC option to see them.