gov to irs.gov: 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. (2400:cb00:2049:1::a29f:3157, TCP_-_NOEDNS_)
gov to irs.gov: The DS RRset for the zone included algorithm 8 (RSASHA256), but no DS RR matched a DNSKEY with algorithm 8 that signs the zone's DNSKEY RRset. See RFC 4035, Sec. 2.2, RFC 6840, Sec. 5.11. (2400:cb00:2049:1::a29f:3157, TCP_-_NOEDNS_)
irs.gov/DNSKEY (alg 8, id 29359): DNSSEC was effectively downgraded because the response had an invalid RCODE (SERVFAIL) with EDNS enabled. See RFC 6891, Sec. 7, RFC 2671, Sec. 5.3. (2400:cb00:2049:1::a29f:3157, TCP_-_NOEDNS_)
irs.gov/DNSKEY (alg 8, id 29359): 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. (2400:cb00:2049:1::a29f:3157, UDP_-_EDNS0_4096_D_KN)
irs.gov/DNSKEY (alg 8, id 29359): The response had an invalid RCODE (SERVFAIL) until EDNS was disabled (however, this server appeared to respond legitimately to other queries with EDNS enabled). See RFC 6891, Sec. 6.2.6. (2400:cb00:2049:1::a29f:3157, UDP_-_EDNS0_4096_D_KN)
irs.gov/DNSKEY (alg 8, id 34821): DNSSEC was effectively downgraded because the response had an invalid RCODE (SERVFAIL) with EDNS enabled. See RFC 6891, Sec. 7, RFC 2671, Sec. 5.3. (2400:cb00:2049:1::a29f:3157, TCP_-_NOEDNS_)
irs.gov/DNSKEY (alg 8, id 34821): 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. (2400:cb00:2049:1::a29f:3157, UDP_-_EDNS0_4096_D_KN)
irs.gov/DNSKEY (alg 8, id 34821): The response had an invalid RCODE (SERVFAIL) until EDNS was disabled (however, this server appeared to respond legitimately to other queries with EDNS enabled). See RFC 6891, Sec. 6.2.6. (2400:cb00:2049:1::a29f:3157, UDP_-_EDNS0_4096_D_KN)
irs.gov/DNSKEY (alg 8, id 38766): DNSSEC was effectively downgraded because the response had an invalid RCODE (SERVFAIL) with EDNS enabled. See RFC 6891, Sec. 7, RFC 2671, Sec. 5.3. (2400:cb00:2049:1::a29f:3157, TCP_-_NOEDNS_)
irs.gov/DNSKEY (alg 8, id 38766): 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. (2400:cb00:2049:1::a29f:3157, UDP_-_EDNS0_4096_D_KN)
irs.gov/DNSKEY (alg 8, id 38766): The response had an invalid RCODE (SERVFAIL) until EDNS was disabled (however, this server appeared to respond legitimately to other queries with EDNS enabled). See RFC 6891, Sec. 6.2.6. (2400:cb00:2049:1::a29f:3157, UDP_-_EDNS0_4096_D_KN)
irs.gov/DNSKEY (alg 8, id 63805): DNSSEC was effectively downgraded because the response had an invalid RCODE (SERVFAIL) with EDNS enabled. See RFC 6891, Sec. 7, RFC 2671, Sec. 5.3. (2400:cb00:2049:1::a29f:3157, TCP_-_NOEDNS_)
irs.gov/DNSKEY (alg 8, id 63805): 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. (2400:cb00:2049:1::a29f:3157, UDP_-_EDNS0_4096_D_KN)
irs.gov/DNSKEY (alg 8, id 63805): The response had an invalid RCODE (SERVFAIL) until EDNS was disabled (however, this server appeared to respond legitimately to other queries with EDNS enabled). See RFC 6891, Sec. 6.2.6. (2400:cb00:2049:1::a29f:3157, UDP_-_EDNS0_4096_D_KN)
irs.gov/DNSKEY: The response had an invalid RCODE (SERVFAIL). See RFC 1035, Sec. 4.1.1. (2400:cb00:2049:1::a29f:3169, UDP_-_EDNS0_512_D_KN)
irs.gov/DNSKEY has errors; select the "Denial of existence" DNSSEC option to see them.
irs.gov/CNAME has errors; select the "Denial of existence" DNSSEC option to see them.
wnzqc8igpv.irs.gov/A has errors; select the "Denial of existence" DNSSEC option to see them.
Warnings (6)
gov to irs.gov: The glue address(es) for ns2.irs.gov (152.216.7.165) differed from its authoritative address(es) (162.159.49.105). See RFC 1034, Sec. 4.2.2.
gov to irs.gov: The glue address(es) for ns2.irs.gov (2610:30:4000:53::91) differed from its authoritative address(es) (2400:cb00:2049:1::a29f:3169). See RFC 1034, Sec. 4.2.2.
gov to irs.gov: The glue address(es) for ns4.irs.gov (152.216.11.133) differed from its authoritative address(es) (162.159.49.87). See RFC 1034, Sec. 4.2.2.
gov to irs.gov: The glue address(es) for ns4.irs.gov (2610:30:2000:53::91) differed from its authoritative address(es) (2400:cb00:2049:1::a29f:3157). See RFC 1034, Sec. 4.2.2.
irs.gov/CNAME has warnings; select the "Denial of existence" DNSSEC option to see them.
wnzqc8igpv.irs.gov/A has warnings; select the "Denial of existence" DNSSEC option to see them.