pt/SOA: DNSSEC was effectively downgraded because no response was received from the server over UDP (tried 11 times) with EDNS enabled. See RFC 6891, Sec. 7, RFC 2671, Sec. 5.3. (193.136.192.64, UDP_-_NOEDNS_)
pt/SOA: No response was received from the server over UDP (tried 11 times) until EDNS was disabled (however, this server appeared to respond legitimately to other queries with EDNS enabled). See RFC 6891, Sec. 6.2.6. (193.136.192.64, UDP_-_EDNS0_4096_D_KN)
pt/SOA: The DNSSEC records necessary to validate the response could not be retrieved from the server. See RFC 4035, Sec. 3.1.1, RFC 4035, Sec. 3.1.3. (193.136.192.64, UDP_-_EDNS0_4096_D_KN)
pt/CNAME has errors; select the "Denial of existence" DNSSEC option to see them.
nbrug.5twpl.pt/A has errors; select the "Denial of existence" DNSSEC option to see them.
pt/CDNSKEY has errors; select the "Denial of existence" DNSSEC option to see them.
pt/CDS has errors; select the "Denial of existence" DNSSEC option to see them.
Warnings (4)
pt/CNAME has warnings; select the "Denial of existence" DNSSEC option to see them.
nbrug.5twpl.pt/A has warnings; select the "Denial of existence" DNSSEC option to see them.
pt/CDNSKEY has warnings; select the "Denial of existence" DNSSEC option to see them.
pt/CDS has warnings; select the "Denial of existence" DNSSEC option to see them.