example.com/CNAME has errors; select the "Denial of existence" DNSSEC option to see them.
Warnings (4)
./DNSKEY (alg 8, id 11019): The server appears to support DNS cookies but did not return a COOKIE option. See RFC 7873, Sec. 5.2.3. (2001:500:200::b, 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. (2001:500:200::b, UDP_-_EDNS0_4096_D_KN)
./DNSKEY (alg 8, id 60955): The server appears to support DNS cookies but did not return a COOKIE option. See RFC 7873, Sec. 5.2.3. (2001:500:200::b, UDP_-_EDNS0_4096_D_KN)
example.com/CNAME has warnings; select the "Denial of existence" DNSSEC option to see them.