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DNSViz: A DNS visualization tool

tudelft.nl

DNSSEC options (hide)
  1. |?|
  2. |?|
  3. |?|
  4. |?|
  5. |?|
  6. |?|
  7. |?|
  8. |?|
  9. |?|
  10. |?|
Notices
DNSSEC Authentication Chain

RRset statusRRset status

Secure (3)
  • tudelft.nl/A
  • tudelft.nl/NS
  • tudelft.nl/SOA

DNSKEY/DS/NSEC statusDNSKEY/DS/NSEC status

Secure (10)
  • ./DNSKEY (alg 8, id 20326)
  • ./DNSKEY (alg 8, id 5613)
  • nl/DNSKEY (alg 13, id 17153)
  • nl/DNSKEY (alg 13, id 63436)
  • nl/DS (alg 13, id 17153)
  • tudelft.nl/DNSKEY (alg 8, id 135)
  • tudelft.nl/DNSKEY (alg 8, id 47965)
  • tudelft.nl/DNSKEY (alg 8, id 59073)
  • tudelft.nl/DS (alg 8, id 28945)
  • tudelft.nl/DS (alg 8, id 47965)
Non_existent (1)
  • tudelft.nl/DNSKEY (alg 8, id 28945)

Delegation statusDelegation status

Secure (2)
  • . to nl
  • nl to tudelft.nl

NoticesNotices

Errors (11)
  • tudelft.nl/AAAA: No response was received from the server over UDP (tried 12 times). See RFC 1035, Sec. 4.2. (130.161.180.1, 130.161.180.65, UDP_-_NOEDNS_)
  • tudelft.nl/DNSKEY: No response was received from the server over UDP (tried 12 times). See RFC 1035, Sec. 4.2. (130.161.180.65, UDP_-_NOEDNS_)
  • tudelft.nl/DNSKEY: No response was received from the server over UDP (tried 4 times). See RFC 1035, Sec. 4.2. (130.161.180.1, 130.161.180.65, UDP_-_EDNS0_512_D_KN)
  • tudelft.nl/MX: No response was received from the server over UDP (tried 12 times). See RFC 1035, Sec. 4.2. (130.161.180.1, 130.161.180.65, UDP_-_NOEDNS_)
  • tudelft.nl/MX: No response was received from the server over UDP (tried 4 times). See RFC 1035, Sec. 4.2. (130.161.180.1, 130.161.180.65, UDP_-_EDNS0_512_D_KN)
  • tudelft.nl/NSEC3PARAM: No response was received from the server over UDP (tried 12 times). See RFC 1035, Sec. 4.2. (130.161.180.1, 130.161.180.65, UDP_-_NOEDNS_)
  • tudelft.nl/SOA: No response was received from the server over UDP (tried 12 times). See RFC 1035, Sec. 4.2. (130.161.180.1, 130.161.180.65, UDP_-_NOEDNS_, UDP_-_NOEDNS__0x20)
  • tudelft.nl/TXT: No response was received from the server over UDP (tried 12 times). See RFC 1035, Sec. 4.2. (130.161.180.1, 130.161.180.65, UDP_-_NOEDNS_)
  • tudelft.nl/DNSKEY has errors; select the "Denial of existence" DNSSEC option to see them.
  • tudelft.nl/CNAME has errors; select the "Denial of existence" DNSSEC option to see them.
  • 49z0a.l6nze.tudelft.nl/A has errors; select the "Denial of existence" DNSSEC option to see them.
Warnings (2)
  • tudelft.nl/A: 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. (130.161.180.1, UDP_-_EDNS0_4096_D_KN)
  • tudelft.nl/NS: 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. (130.161.180.1, UDP_-_EDNS0_4096_D_KN)

DNSKEY legend

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