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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

Bogus (2)
  • tudelft.nl/A
  • tudelft.nl/NS

DNSKEY/DS/NSEC statusDNSKEY/DS/NSEC status

Secure (7)
  • ./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/DS (alg 8, id 28945)
  • tudelft.nl/DS (alg 8, id 47965)
Non_existent (3)
  • tudelft.nl/DNSKEY (alg 8, id 135)
  • tudelft.nl/DNSKEY (alg 8, id 28945)
  • tudelft.nl/DNSKEY (alg 8, id 47965)

Delegation statusDelegation status

Bogus (1)
  • nl to tudelft.nl
Secure (1)
  • . to nl

NoticesNotices

Errors (17)
  • nl to tudelft.nl: No valid RRSIGs made by a key corresponding to a DS RR were found covering the DNSKEY RRset, resulting in no secure entry point (SEP) into the zone. See RFC 4035, Sec. 2.2, RFC 6840, Sec. 5.11.
  • tudelft.nl zone: The server(s) were not responsive to queries over TCP. See RFC 1035, Sec. 4.2. (130.161.180.1, 130.161.180.65)
  • tudelft.nl/A: 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/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. (130.161.180.1, 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/NS: DNSSEC was effectively downgraded because no response was received from the server over UDP (tried 10 times) with the DO bit set. See RFC 4035, Sec. 3.2.1. (130.161.180.65, UDP_-_EDNS0_4096_)
  • tudelft.nl/NS: No response was received from the server over UDP (tried 10 times) until the DO EDNS flag was cleared. See RFC 6891, Sec. 6.1.4. (130.161.180.65, UDP_-_EDNS0_4096_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 TCP (tried 3 times). See RFC 1035, Sec. 4.2. (130.161.180.1, 130.161.180.65, TCP_-_EDNS0_4096_D_N)
  • 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.
  • qpozs.zo2rt.tudelft.nl/A has errors; 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