ip6.arpa/MX has errors; select the "Denial of existence" DNSSEC option to see them.
Warnings (12)
./DNSKEY (alg 8, id 11019): 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. (192.112.36.4, UDP_-_EDNS0_4096_D_KN)
./DNSKEY (alg 8, id 11019): The server appears to support DNS cookies but did not return a COOKIE option. See RFC 7873, Sec. 5.2.3. (2001:500:200::b, UDP_-_EDNS0_4096_D_KN)
./DNSKEY (alg 8, id 20326): 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. (192.112.36.4, UDP_-_EDNS0_4096_D_KN)
./DNSKEY (alg 8, id 20326): The server appears to support DNS cookies but did not return a COOKIE option. See RFC 7873, Sec. 5.2.3. (2001:500:200::b, UDP_-_EDNS0_4096_D_KN)
./DNSKEY (alg 8, id 60955): 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. (192.112.36.4, UDP_-_EDNS0_4096_D_KN)
./DNSKEY (alg 8, id 60955): The server appears to support DNS cookies but did not return a COOKIE option. See RFC 7873, Sec. 5.2.3. (2001:500:200::b, UDP_-_EDNS0_4096_D_KN)
./DNSKEY: The server appears to support DNS cookies but did not return a COOKIE option. See RFC 7873, Sec. 5.2.3. (2001:500:200::b, UDP_-_EDNS0_512_D_KN)
arpa/DS (alg 8, id 42581): The server appears to support DNS cookies but did not return a COOKIE option. See RFC 7873, Sec. 5.2.3. (2001:500:200::b, UDP_-_EDNS0_4096_D_KN)
arpa/DS (alg 8, id 42581): The server appears to support DNS cookies but did not return a COOKIE option. See RFC 7873, Sec. 5.2.3. (2001:500:200::b, UDP_-_EDNS0_4096_D_KN)
ip6.arpa/SOA: No response was received from the server over UDP (tried 6 times) until the COOKIE EDNS option was removed (however, this server appeared to respond legitimately to other queries with the COOKIE EDNS option present). See RFC 6891, Sec. 6.1.2. (196.216.169.11, UDP_-_EDNS0_4096_D_KN)
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.