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DNSViz: A DNS visualization tool

snu.ac.kr

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

RRset statusRRset status

Insecure (5)
  • snu.ac.kr/A
  • snu.ac.kr/MX
  • snu.ac.kr/NS
  • snu.ac.kr/SOA
  • snu.ac.kr/TXT
Secure (1)
  • ac.kr/SOA

DNSKEY/DS/NSEC statusDNSKEY/DS/NSEC status

Secure (11)
  • ./DNSKEY (alg 8, id 20326)
  • ./DNSKEY (alg 8, id 26116)
  • NSEC3 proving non-existence of snu.ac.kr/DS
  • ac.kr/DNSKEY (alg 8, id 25161)
  • ac.kr/DNSKEY (alg 8, id 42183)
  • ac.kr/DNSKEY (alg 8, id 46414)
  • ac.kr/DS (alg 8, id 46414)
  • kr/DNSKEY (alg 8, id 24105)
  • kr/DNSKEY (alg 8, id 26691)
  • kr/DNSKEY (alg 8, id 61615)
  • kr/DS (alg 8, id 61615)

Delegation statusDelegation status

Insecure (1)
  • ac.kr to snu.ac.kr
Secure (2)
  • . to kr
  • kr to ac.kr

NoticesNotices

Warnings (1)
  • snu.ac.kr/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. (147.46.37.10, UDP_-_EDNS0_4096_D_K)

DNSKEY legend

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