duckdns.org zone: The server(s) were not responsive to queries over TCP. See RFC 1035, Sec. 4.2. (15.222.19.97, 99.79.16.64, 99.79.143.35)
duckdns.org/DNSKEY: No response was received from the server over TCP (tried 10 times). See RFC 1035, Sec. 4.2. (15.222.19.97, 99.79.16.64, TCP_-_EDNS0_4096_D_N)
duckdns.org/DNSKEY: No response was received from the server over TCP (tried 7 times). See RFC 1035, Sec. 4.2. (99.79.143.35, TCP_-_EDNS0_4096_D)
duckdns.org/DNSKEY: No response was received from the server over UDP (tried 4 times). See RFC 1035, Sec. 4.2. (35.182.183.211, 35.183.157.249, UDP_-_EDNS0_512_D_KN)
duckdns.org/CNAME has errors; select the "Denial of existence" DNSSEC option to see them.
Warnings (3)
NSEC3 proving non-existence of duckdns.org/DS: The salt value for an NSEC3 record should be empty. See RFC 9276, Sec. 3.1.
NSEC3 proving non-existence of duckdns.org/DS: The salt value for an NSEC3 record should be empty. See RFC 9276, Sec. 3.1.
duckdns.org/CNAME has warnings; select the "Denial of existence" DNSSEC option to see them.