umich.edu
Updated:
2024-03-15 20:35:40 UTC (256 days ago)
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Notices
DNSSEC Authentication Chain
RRset status
Secure (6)
- umich.edu/A
- umich.edu/AAAA
- umich.edu/MX
- umich.edu/NS
- umich.edu/SOA
- umich.edu/TXT
DNSKEY/DS/NSEC status
Secure (9)
- ./DNSKEY (alg 8, id 20326)
- ./DNSKEY (alg 8, id 30903)
- edu/DNSKEY (alg 13, id 30678)
- edu/DNSKEY (alg 13, id 35663)
- edu/DS (alg 13, id 35663)
- umich.edu/DNSKEY (alg 13, id 28641)
- umich.edu/DNSKEY (alg 13, id 58714)
- umich.edu/DS (alg 13, id 41530)
- umich.edu/DS (alg 13, id 58714)
Non_existent (1)
- umich.edu/DNSKEY (alg 13, id 41530)
Delegation status
Secure (2)
- . to edu
- edu to umich.edu
Notices
Errors (9)
- edu to umich.edu: 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:3005, UDP_-_NOEDNS_)
- edu to umich.edu: The DS RRset for the zone included algorithm 13 (ECDSAP256SHA256), but no DS RR matched a DNSKEY with algorithm 13 that signs the zone's DNSKEY RRset. See RFC 4035, Sec. 2.2, RFC 6840, Sec. 5.11. (2400:cb00:2049:1::a29f:3005, UDP_-_NOEDNS_)
- umich.edu/DNSKEY (alg 13, id 28641): 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:3005, UDP_-_NOEDNS_)
- umich.edu/DNSKEY (alg 13, id 28641): 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:3005, UDP_-_EDNS0_4096_D_KN)
- umich.edu/DNSKEY (alg 13, id 28641): 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:3005, UDP_-_EDNS0_4096_D_KN)
- umich.edu/DNSKEY (alg 13, id 58714): 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:3005, UDP_-_NOEDNS_)
- umich.edu/DNSKEY (alg 13, id 58714): 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:3005, UDP_-_EDNS0_4096_D_KN)
- umich.edu/DNSKEY (alg 13, id 58714): 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:3005, UDP_-_EDNS0_4096_D_KN)
- umich.edu/DNSKEY has errors; select the "Denial of existence" DNSSEC option to see them.
Warnings (1)
- edu to umich.edu: The following NS name(s) were found in the delegation NS RRset (i.e., in the edu zone), but not in the authoritative NS RRset: umich-edu.dns.umich.org See RFC 1034, Sec. 4.2.2.
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