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DNSViz: A DNS visualization tool

howard.edu

Updated: 2018-03-18 15:37:24 UTC (368 days ago) Update now
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DNSSEC options (hide)
  1. |?|
  2. |?|
  3. |?|
  4. |?|
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Notices
DNSSEC Authentication Chain

RRset statusRRset status

Insecure (5)
  • howard.edu/A
  • howard.edu/MX
  • howard.edu/NS
  • howard.edu/SOA
  • howard.edu/TXT
Secure (1)
  • edu/SOA

DNSKEY/DS/NSEC statusDNSKEY/DS/NSEC status

Secure (7)
  • ./DNSKEY (alg 8, id 19036)
  • ./DNSKEY (alg 8, id 20326)
  • ./DNSKEY (alg 8, id 41824)
  • NSEC3 proving non-existence of howard.edu/DS
  • edu/DNSKEY (alg 8, id 14375)
  • edu/DNSKEY (alg 8, id 28065)
  • edu/DS (alg 8, id 28065)

Delegation statusDelegation status

Insecure (1)
  • edu to howard.edu
Secure (1)
  • . to edu

NoticesNotices

Errors (9)
  • howard.edu zone: The server(s) responded over TCP with a malformed response or with an invalid RCODE. (138.238.156.21, 138.238.156.23)
  • howard.edu zone: The server(s) responded over UDP with a malformed response or with an invalid RCODE. (138.238.156.21, 138.238.156.23)
  • howard.edu/A: The response had an invalid RCODE (REFUSED). (138.238.156.21, 138.238.156.23, UDP_-_EDNS0_4096_D)
  • howard.edu/DNSKEY: The response had an invalid RCODE (REFUSED). (138.238.156.21, 138.238.156.23, UDP_-_EDNS0_4096_D, UDP_-_EDNS0_512_D)
  • howard.edu/MX: The response had an invalid RCODE (REFUSED). (138.238.156.21, 138.238.156.23, UDP_-_EDNS0_4096_D, UDP_-_EDNS0_512_D)
  • howard.edu/NS: The response had an invalid RCODE (REFUSED). (138.238.156.21, 138.238.156.23, UDP_-_EDNS0_4096_D)
  • howard.edu/SOA: The response had an invalid RCODE (REFUSED). (138.238.156.21, 138.238.156.23, TCP_-_EDNS0_4096_D)
  • howard.edu/SOA: The response had an invalid RCODE (REFUSED). (138.238.156.21, 138.238.156.23, UDP_-_EDNS0_4096_D)
  • howard.edu/TXT: The response had an invalid RCODE (REFUSED). (138.238.156.21, 138.238.156.23, UDP_-_EDNS0_4096_D)
Warnings (1)
  • edu to howard.edu: The following NS name(s) were found in the delegation NS RRset (i.e., in the edu zone), but not in the authoritative NS RRset: ns1.howard.edu, ns2.howard.edu

DNSKEY legend

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