edu.sg to sp.edu.sg: No valid RRSIGs made by a key corresponding to a DS RR were found covering the DNSKEY RRset, resulting in no secure entry point (SEP) into the zone. See RFC 4035, Sec. 2.2, RFC 6840, Sec. 5.11. (164.78.252.50, 164.78.252.51, 2403:e900:ff1:e0fc::1:11, 2403:e900:ff1:e0fc::1:12, UDP_-_EDNS0_4096_D_KN)
lt46zraijp.sp.edu.sg/A has errors; select the "Denial of existence" DNSSEC option to see them.
sp.edu.sg/CNAME has errors; select the "Denial of existence" DNSSEC option to see them.
Warnings (2)
lt46zraijp.sp.edu.sg/A has warnings; select the "Denial of existence" DNSSEC option to see them.
sp.edu.sg/CNAME has warnings; select the "Denial of existence" DNSSEC option to see them.