us-cert.gov
Updated:
2022-01-03 12:49:50 UTC (1058 days ago)
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Notices
DNSSEC Authentication Chain
RRset status
Secure (6)
- us-cert.gov/A
- us-cert.gov/MX
- us-cert.gov/NS
- us-cert.gov/NSEC3PARAM
- us-cert.gov/SOA
- us-cert.gov/TXT
DNSKEY/DS/NSEC status
Secure (10)
- ./DNSKEY (alg 8, id 14748)
- ./DNSKEY (alg 8, id 20326)
- ./DNSKEY (alg 8, id 9799)
- gov/DNSKEY (alg 8, id 6229)
- gov/DNSKEY (alg 8, id 7698)
- gov/DS (alg 8, id 7698)
- us-cert.gov/DNSKEY (alg 8, id 30121)
- us-cert.gov/DNSKEY (alg 8, id 56448)
- us-cert.gov/DS (alg 8, id 30121)
- us-cert.gov/DS (alg 8, id 30121)
Delegation status
Secure (2)
- . to gov
- gov to us-cert.gov
Notices
Errors (6)
- us-cert.gov zone: The server(s) were not responsive to queries over UDP. See RFC 1035, Sec. 4.2. (2620:112:5000:1::2)
- us-cert.gov/A: No response was received from the server over UDP (tried 12 times). See RFC 1035, Sec. 4.2. (2620:112:5000:1::2, UDP_-_NOEDNS_)
- us-cert.gov/NS: No response was received from the server over UDP (tried 12 times). See RFC 1035, Sec. 4.2. (2620:112:5000:1::2, UDP_-_NOEDNS_)
- us-cert.gov/AAAA has errors; select the "Denial of existence" DNSSEC option to see them.
- us-cert.gov/CNAME has errors; select the "Denial of existence" DNSSEC option to see them.
- yhxnsm0kf2.us-cert.gov/A has errors; select the "Denial of existence" DNSSEC option to see them.
Warnings (8)
- us-cert.gov/DS (alg 8, id 30121): DNSSEC implementers are prohibited from implementing signing with DS algorithm 1 (SHA-1). See RFC 8624, Sec. 3.2.
- us-cert.gov/DS (alg 8, id 30121): DNSSEC implementers are prohibited from implementing signing with DS algorithm 1 (SHA-1). See RFC 8624, Sec. 3.2.
- us-cert.gov/DS (alg 8, id 30121): DS records with digest type 1 (SHA-1) are ignored when DS records with digest type 2 (SHA-256) exist in the same RRset. See RFC 4509, Sec. 3.
- us-cert.gov/DS (alg 8, id 30121): DS records with digest type 1 (SHA-1) are ignored when DS records with digest type 2 (SHA-256) exist in the same RRset. See RFC 4509, Sec. 3.
- us-cert.gov/MX: No response was received until the UDP payload size was decreased, indicating that the server might be attempting to send a payload that exceeds the path maximum transmission unit (PMTU) size. See RFC 6891, Sec. 6.2.6. (208.73.184.110, UDP_-_EDNS0_4096_D_KN)
- us-cert.gov/AAAA has warnings; select the "Denial of existence" DNSSEC option to see them.
- us-cert.gov/CNAME has warnings; select the "Denial of existence" DNSSEC option to see them.
- yhxnsm0kf2.us-cert.gov/A has warnings; select the "Denial of existence" DNSSEC option to see them.
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