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DNSViz: A DNS visualization tool

uni-tuebingen.de

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

RRset statusRRset status

Insecure (6)
  • uni-tuebingen.de/A
  • uni-tuebingen.de/AAAA
  • uni-tuebingen.de/MX
  • uni-tuebingen.de/NS
  • uni-tuebingen.de/SOA
  • uni-tuebingen.de/TXT
Secure (1)
  • de/SOA

DNSKEY/DS/NSEC statusDNSKEY/DS/NSEC status

Secure (6)
  • ./DNSKEY (alg 8, id 18733)
  • ./DNSKEY (alg 8, id 20326)
  • NSEC3 proving non-existence of uni-tuebingen.de/DS
  • de/DNSKEY (alg 8, id 26755)
  • de/DNSKEY (alg 8, id 55134)
  • de/DS (alg 8, id 26755)

Delegation statusDelegation status

Insecure (1)
  • de to uni-tuebingen.de
Secure (1)
  • . to de

NoticesNotices

Errors (12)
  • NSEC3 proving non-existence of uni-tuebingen.de/DS: An iterations count of 0 must be used in NSEC3 records to alleviate computational burdens. See RFC 9276, Sec. 3.1.
  • NSEC3 proving non-existence of uni-tuebingen.de/DS: An iterations count of 0 must be used in NSEC3 records to alleviate computational burdens. See RFC 9276, Sec. 3.1.
  • uni-tuebingen.de zone: The server(s) responded over TCP with a malformed response or with an invalid RCODE. See RFC 1035, Sec. 4.1.1. (2001:7c0:300c:137::8602:c804)
  • uni-tuebingen.de/A: No response was received from the server over UDP (tried 12 times). See RFC 1035, Sec. 4.2. (2001:7c0:300c:137::8602:c803, UDP_-_NOEDNS_)
  • uni-tuebingen.de/DNSKEY: No response was received from the server over TCP (tried 3 times). See RFC 1035, Sec. 4.2. (2001:7c0:300c:137::8602:c803, TCP_-_EDNS0_4096_D_KN)
  • uni-tuebingen.de/DNSKEY: No response was received from the server over UDP (tried 12 times). See RFC 1035, Sec. 4.2. (2001:7c0:300c:137::8602:c804, UDP_-_NOEDNS_)
  • uni-tuebingen.de/DNSKEY: No response was received from the server over UDP (tried 4 times). See RFC 1035, Sec. 4.2. (2001:7c0:300c:137::8602:c803, 2001:7c0:300c:137::8602:c804, UDP_-_EDNS0_512_D_KN)
  • uni-tuebingen.de/MX: No response was received from the server over UDP (tried 4 times). See RFC 1035, Sec. 4.2. (2001:7c0:300c:137::8602:c803, 2001:7c0:300c:137::8602:c804, UDP_-_EDNS0_512_D_KN)
  • uni-tuebingen.de/SOA: No response was received from the server over TCP (tried 3 times). See RFC 1035, Sec. 4.2. (2001:7c0:300c:137::8602:c804, TCP_-_EDNS0_4096_D_N)
  • uni-tuebingen.de/DNSKEY has errors; select the "Denial of existence" DNSSEC option to see them.
  • uni-tuebingen.de/DS has errors; select the "Denial of existence" DNSSEC option to see them.
  • uni-tuebingen.de/CNAME has errors; select the "Denial of existence" DNSSEC option to see them.
Warnings (15)
  • NSEC3 proving non-existence of uni-tuebingen.de/DS: The salt value for an NSEC3 record should be empty. See RFC 9276, Sec. 3.1.
  • NSEC3 proving non-existence of uni-tuebingen.de/DS: The salt value for an NSEC3 record should be empty. See RFC 9276, Sec. 3.1.
  • uni-tuebingen.de/AAAA: 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. (2001:7c0:300c:137::8602:c803, UDP_-_EDNS0_4096_D_KN)
  • uni-tuebingen.de/AAAA: 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. (2001:7c0:300c:137::8602:c804, UDP_-_EDNS0_4096_D_KN)
  • uni-tuebingen.de/MX: No response was received from the server over UDP (tried 10 times) until the DO EDNS flag was cleared (however, this server appeared to respond legitimately to other queries with the DO EDNS flag set). See RFC 6891, Sec. 6.1.4. (2001:7c0:300c:137::8602:c804, UDP_-_EDNS0_4096_D_KN)
  • uni-tuebingen.de/MX: 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. (2001:7c0:300c:137::8602:c803, UDP_-_EDNS0_4096_D_KN)
  • uni-tuebingen.de/NS: No response was received from the server over UDP (tried 10 times) until the DO EDNS flag was cleared (however, this server appeared to respond legitimately to other queries with the DO EDNS flag set). See RFC 6891, Sec. 6.1.4. (2001:7c0:300c:137::8602:c804, UDP_-_EDNS0_4096_D_KN)
  • uni-tuebingen.de/NS: 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. (2001:7c0:300c:137::8602:c803, UDP_-_EDNS0_4096_D_KN)
  • uni-tuebingen.de/SOA: No response was received from the server over UDP (tried 10 times) until the DO EDNS flag was cleared (however, this server appeared to respond legitimately to other queries with the DO EDNS flag set). See RFC 6891, Sec. 6.1.4. (2001:7c0:300c:137::8602:c803, UDP_-_EDNS0_4096_D_KN)
  • uni-tuebingen.de/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. (2001:7c0:300c:137::8602:c804, UDP_-_EDNS0_4096_D_KN_0x20)
  • uni-tuebingen.de/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. (2001:7c0:300c:137::8602:c804, UDP_-_EDNS0_4096_D_KN)
  • uni-tuebingen.de/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. (2001:7c0:300c:137::8602:c803, 2001:7c0:300c:137::8602:c804, UDP_-_EDNS0_4096_D_KN)
  • uni-tuebingen.de/TXT: 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. (2001:7c0:300c:137::8602:c803, UDP_-_EDNS0_4096_D_KN)
  • ev9mgjkua1.uni-tuebingen.de/A has warnings; select the "Denial of existence" DNSSEC option to see them.
  • uni-tuebingen.de/DS 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