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DNSViz: A DNS visualization tool

epa.gov

DNSSEC options (hide)
  1. |?|
  2. |?|
  3. |?|
  4. |?|
  5. |?|
  6. |?|
  7. |?|
  8. |?|
  9. |?|
  10. |?|
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 27585)
  • 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, 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_)
  • 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.
  • qdtlf4yxi9.epa.gov/A has errors; select the "Denial of existence" DNSSEC option to see them.
Warnings (5)
  • 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. (161.80.212.5, UDP_-_EDNS0_4096_D_KN, UDP_-_EDNS0_4096_D_KN_0x20)
  • epa.gov/SOA: No response was received from the server over UDP (tried 7 times) until the NSID EDNS option was removed (however, this server appeared to respond legitimately to other queries with the NSID EDNS option present). See RFC 6891, Sec. 6.1.2. (161.80.212.15, 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. (134.67.12.15, 161.80.212.5, 161.80.212.15, UDP_-_EDNS0_4096_D_KN, UDP_-_EDNS0_4096_D_KN_0x20)
  • epa.gov/CNAME has warnings; select the "Denial of existence" DNSSEC option to see them.
  • qdtlf4yxi9.epa.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