duckdns.org/DNSKEY: No response was received from the server over UDP (tried 12 times). See RFC 1035, Sec. 4.2. (15.222.19.97, UDP_-_NOEDNS_)
duckdns.org/DNSKEY: No response was received from the server over UDP (tried 4 times). See RFC 1035, Sec. 4.2. (3.97.58.28, 15.222.19.97, 35.182.183.211, 35.183.157.249, 99.79.16.64, 99.79.143.35, UDP_-_EDNS0_512_D_KN)
duckdns.org/CNAME has errors; select the "Denial of existence" DNSSEC option to see them.
Warnings (6)
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.
isthekey.duckdns.org/A: 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. (3.97.58.28, UDP_-_EDNS0_4096_D_KN)
isthekey.duckdns.org/A: 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. (15.223.106.16, 35.183.157.249, UDP_-_EDNS0_4096_D_KN)
duckdns.org/CNAME has warnings; select the "Denial of existence" DNSSEC option to see them.
isthekey.duckdns.org/AAAA has warnings; select the "Denial of existence" DNSSEC option to see them.