arpa zone: The server(s) were not responsive to queries over TCP. See RFC 1035, Sec. 4.2. (2001:500:2::c)
arpa/SOA: No response was received from the server over TCP (tried 3 times). See RFC 1035, Sec. 4.2. (2001:500:2::c, TCP_-_EDNS0_4096_D_N)
Warnings (5)
./DNSKEY (alg 8, id 20038): 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)
./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. (2001:500:2f::f, UDP_-_EDNS0_4096_D_KN)
arpa/CNAME has warnings; select the "Denial of existence" DNSSEC option to see them.
arpa/CDS has warnings; select the "Denial of existence" DNSSEC option to see them.
arpa/NSEC3PARAM has warnings; select the "Denial of existence" DNSSEC option to see them.