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DNSViz: A DNS visualization tool

fema.gov

DNSSEC options (hide)
  1. |?|
  2. |?|
  3. |?|
  4. |?|
  5. |?|
  6. |?|
  7. |?|
  8. |?|
  9. |?|
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Notices
DNSSEC Authentication Chain

RRset statusRRset status

Secure (5)
  • fema.gov/A
  • fema.gov/MX
  • fema.gov/NS
  • fema.gov/SOA
  • fema.gov/TXT

DNSKEY/DS/NSEC statusDNSKEY/DS/NSEC status

Secure (10)
  • ./DNSKEY (alg 8, id 20326)
  • ./DNSKEY (alg 8, id 26838)
  • fema.gov/DNSKEY (alg 8, id 20066)
  • fema.gov/DNSKEY (alg 8, id 55629)
  • fema.gov/DNSKEY (alg 8, id 62125)
  • fema.gov/DS (alg 8, id 20066)
  • fema.gov/DS (alg 8, id 20066)
  • gov/DNSKEY (alg 8, id 57735)
  • gov/DNSKEY (alg 8, id 7698)
  • gov/DS (alg 8, id 7698)

Delegation statusDelegation status

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

NoticesNotices

Errors (3)
  • fema.gov/AAAA: The response had an invalid RCODE (SERVFAIL). See RFC 1035, Sec. 4.1.1. (2.16.40.65, 23.61.199.64, 23.211.61.66, 23.211.132.67, 184.85.248.66, 193.108.91.91, 2600:1401:2::5b, 2600:1403:a::41, 2600:1406:1b::43, 2600:1406:32::40, 2a02:26f0:117::42, UDP_-_NOEDNS_)
  • w0g4ysu3t9.fema.gov/A has errors; select the "Denial of existence" DNSSEC option to see them.
  • fema.gov/CNAME has errors; select the "Denial of existence" DNSSEC option to see them.
Warnings (8)
  • fema.gov/DS (alg 8, id 20066): DNSSEC implementers are prohibited from implementing signing with DS algorithm 1 (SHA-1). See RFC 8624, Sec. 3.2.
  • fema.gov/DS (alg 8, id 20066): DNSSEC implementers are prohibited from implementing signing with DS algorithm 1 (SHA-1). See RFC 8624, Sec. 3.2.
  • fema.gov/DS (alg 8, id 20066): 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.
  • fema.gov/DS (alg 8, id 20066): 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.
  • gov/DS (alg 8, id 7698): The server appears to support DNS cookies but did not return a COOKIE option. See RFC 7873, Sec. 5.2.3. (192.5.5.241, 2001:500:2f::f, UDP_-_EDNS0_4096_D_KN)
  • gov/DS (alg 8, id 7698): The server appears to support DNS cookies but did not return a COOKIE option. See RFC 7873, Sec. 5.2.3. (192.5.5.241, 2001:500:2f::f, UDP_-_EDNS0_4096_D_KN)
  • w0g4ysu3t9.fema.gov/A has warnings; select the "Denial of existence" DNSSEC option to see them.
  • fema.gov/CNAME 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