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DNSViz: A DNS visualization tool

cisa.gov

DNSSEC options (hide)
  1. |?|
  2. |?|
  3. |?|
  4. |?|
  5. |?|
  6. |?|
  7. |?|
  8. |?|
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Notices
DNSSEC Authentication Chain

RRset statusRRset status

Secure (8)
  • cisa.gov/A
  • cisa.gov/AAAA
  • cisa.gov/AAAA
  • cisa.gov/MX
  • cisa.gov/NS
  • cisa.gov/NSEC3PARAM
  • cisa.gov/SOA
  • cisa.gov/TXT

DNSKEY/DS/NSEC statusDNSKEY/DS/NSEC status

Secure (10)
  • ./DNSKEY (alg 8, id 18733)
  • ./DNSKEY (alg 8, id 20326)
  • cisa.gov/DNSKEY (alg 8, id 19795)
  • cisa.gov/DNSKEY (alg 8, id 27318)
  • cisa.gov/DNSKEY (alg 8, id 35784)
  • cisa.gov/DS (alg 8, id 19795)
  • cisa.gov/DS (alg 8, id 19795)
  • gov/DNSKEY (alg 8, id 56278)
  • gov/DNSKEY (alg 8, id 7698)
  • gov/DS (alg 8, id 7698)

Delegation statusDelegation status

Secure (2)
  • . to gov
  • gov to cisa.gov

NoticesNotices

Errors (3)
  • cisa.gov/MX: No response was received from the server over UDP (tried 4 times). See RFC 1035, Sec. 4.2. (184.85.248.66, UDP_-_EDNS0_512_D_KN)
  • cisa.gov/CNAME has errors; select the "Denial of existence" DNSSEC option to see them.
  • b2c3wiqs80.cisa.gov/A has errors; select the "Denial of existence" DNSSEC option to see them.
Warnings (8)
  • cisa.gov/DS (alg 8, id 19795): DNSSEC implementers are prohibited from implementing signing with DS algorithm 1 (SHA-1). See RFC 8624, Sec. 3.2.
  • cisa.gov/DS (alg 8, id 19795): DNSSEC implementers are prohibited from implementing signing with DS algorithm 1 (SHA-1). See RFC 8624, Sec. 3.2.
  • cisa.gov/DS (alg 8, id 19795): 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.
  • cisa.gov/DS (alg 8, id 19795): 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.
  • cisa.gov/NSEC3PARAM: 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. (184.85.248.66, UDP_-_EDNS0_4096_D_KN)
  • cisa.gov/TXT: 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. (184.85.248.66, 2a02:26f0:117::42, UDP_-_EDNS0_4096_D_KN)
  • cisa.gov/CNAME has warnings; select the "Denial of existence" DNSSEC option to see them.
  • b2c3wiqs80.cisa.gov/A has warnings; select the "Denial of existence" DNSSEC option to see them.

DNSKEY legend

Full legend
SEP bit setSEP bit set
Revoke bit setRevoke bit set
Trust anchorTrust anchor
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DNSSEC authentication graph