defcon.org/CNAME has errors; select the "Denial of existence" DNSSEC option to see them.
szh796tdu3.defcon.org/A has errors; select the "Denial of existence" DNSSEC option to see them.
Warnings (3)
defcon.org/SOA: 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. (50.230.231.69, UDP_-_EDNS0_4096_D_KN)
defcon.org/CNAME has warnings; select the "Denial of existence" DNSSEC option to see them.
szh796tdu3.defcon.org/A has warnings; select the "Denial of existence" DNSSEC option to see them.