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DNSViz: A DNS visualization tool

epa.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 (7)
  • epa.gov/A
  • epa.gov/AAAA
  • epa.gov/MX
  • epa.gov/NS
  • epa.gov/NSEC3PARAM
  • epa.gov/SOA
  • epa.gov/TXT

DNSKEY/DS/NSEC statusDNSKEY/DS/NSEC status

Secure (13)
  • ./DNSKEY (alg 8, id 20326)
  • ./DNSKEY (alg 8, id 46780)
  • epa.gov/DNSKEY (alg 8, id 23626)
  • epa.gov/DNSKEY (alg 8, id 34155)
  • epa.gov/DNSKEY (alg 8, id 43035)
  • epa.gov/DNSKEY (alg 8, id 61728)
  • epa.gov/DS (alg 8, id 23626)
  • gov/DNSKEY (alg 8, id 10104)
  • gov/DNSKEY (alg 8, id 49735)
  • gov/DNSKEY (alg 8, id 64280)
  • gov/DNSKEY (alg 8, id 7698)
  • gov/DS (alg 8, id 64280)
  • gov/DS (alg 8, id 7698)

Delegation statusDelegation status

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

NoticesNotices

Errors (7)
  • epa.gov/DNSKEY: No response was received from the server over UDP (tried 12 times). See RFC 1035, Sec. 4.2. (134.67.12.5, 134.67.12.15, 161.80.212.5, 161.80.212.15, UDP_-_NOEDNS_)
  • epa.gov/DNSKEY: No response was received from the server over UDP (tried 4 times). See RFC 1035, Sec. 4.2. (134.67.12.5, 134.67.12.15, 161.80.212.5, 161.80.212.15, 2620:117:5071:d4::f005, UDP_-_EDNS0_512_D_KN)
  • epa.gov/NS: No response was received from the server over UDP (tried 12 times). See RFC 1035, Sec. 4.2. (134.67.12.5, 134.67.12.15, 161.80.212.5, 161.80.212.15, UDP_-_NOEDNS_)
  • epa.gov/NSEC3PARAM: No response was received from the server over UDP (tried 12 times). See RFC 1035, Sec. 4.2. (134.67.12.5, 134.67.12.15, 161.80.212.5, 161.80.212.15, UDP_-_NOEDNS_)
  • fx24o1m9ak.epa.gov/A has errors; select the "Denial of existence" DNSSEC option to see them.
  • epa.gov/DNSKEY has errors; select the "Denial of existence" DNSSEC option to see them.
  • epa.gov/CNAME has errors; select the "Denial of existence" DNSSEC option to see them.
Warnings (4)
  • epa.gov/SOA: No response was received from the server over UDP (tried 6 times) until the COOKIE EDNS option was removed (however, this server appeared to respond legitimately to other queries with the COOKIE EDNS option present). See RFC 6891, Sec. 6.1.2. (134.67.12.5, 161.80.212.5, 161.80.212.15, UDP_-_EDNS0_4096_D_KN, UDP_-_EDNS0_4096_D_KN_0x20)
  • epa.gov/SOA: 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. (161.80.212.5, 161.80.212.15, UDP_-_EDNS0_4096_D_KN, UDP_-_EDNS0_4096_D_KN_0x20)
  • fx24o1m9ak.epa.gov/A has warnings; select the "Denial of existence" DNSSEC option to see them.
  • epa.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