tn zone: The server(s) were not responsive to queries over UDP. See RFC 1035, Sec. 4.2. (2c0f:fab0:ffff:4:41:228:62:63)
tn/NS: There was an error communicating with the server over UDP (EACCES). See RFC 1035, Sec. 4.2. (2c0f:fab0:ffff:4:41:228:62:63, UDP_-_EDNS0_4096_D_KN)
Warnings (4)
tn/DNSKEY (alg 8, id 36171): No response was received from the server over UDP (tried 7 times) until the NSID EDNS option was removed (however, this server appeared to respond legitimately to other queries with the NSID EDNS option present). See RFC 6891, Sec. 6.1.2. (2001:43f8:120::25, UDP_-_EDNS0_4096_D_KN)
tn/DNSKEY (alg 8, id 8629): No response was received from the server over UDP (tried 7 times) until the NSID EDNS option was removed (however, this server appeared to respond legitimately to other queries with the NSID EDNS option present). See RFC 6891, Sec. 6.1.2. (2001:43f8:120::25, UDP_-_EDNS0_4096_D_KN)
tn/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. (2001:43f8:120::25, UDP_-_EDNS0_4096_D_KN)
tn/DNSKEY has warnings; select the "Denial of existence" DNSSEC option to see them.