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DNSViz: A DNS visualization tool

cdc.gov.tw

Updated: 2021-06-08 02:54:02 UTC (1062 days ago) Update now
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DNSSEC options (hide)
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Notices
DNSSEC Authentication Chain

RRset statusRRset status

Insecure (4)
  • cdc.gov.tw/A
  • cdc.gov.tw/NS
  • cdc.gov.tw/SOA
  • cdc.gov.tw/TXT
Secure (1)
  • gov.tw/SOA

DNSKEY/DS/NSEC statusDNSKEY/DS/NSEC status

Secure (11)
  • ./DNSKEY (alg 8, id 14631)
  • ./DNSKEY (alg 8, id 20326)
  • NSEC3 proving non-existence of cdc.gov.tw/DS
  • gov.tw/DNSKEY (alg 8, id 19435)
  • gov.tw/DNSKEY (alg 8, id 34905)
  • gov.tw/DNSKEY (alg 8, id 56475)
  • gov.tw/DS (alg 8, id 19435)
  • gov.tw/DS (alg 8, id 514)
  • tw/DNSKEY (alg 8, id 17220)
  • tw/DNSKEY (alg 8, id 40792)
  • tw/DS (alg 8, id 40792)
Non_existent (1)
  • gov.tw/DNSKEY (alg 8, id 514)

Delegation statusDelegation status

Insecure (1)
  • gov.tw to cdc.gov.tw
Secure (2)
  • . to tw
  • tw to gov.tw

NoticesNotices

Errors (12)
  • cdc.gov.tw zone: The server(s) were not responsive to queries over TCP. (61.57.41.148)
  • cdc.gov.tw zone: The server(s) were not responsive to queries over UDP. (203.65.72.1, 2001:4420:609d:1:0:5efe:cb41:4801, 2001:4420:a603:ff03::148)
  • cdc.gov.tw/A: No response was received from the server over UDP (tried 11 times). (2001:4420:609d:1:0:5efe:cb41:4801, UDP_-_EDNS0_4096_D_KN)
  • cdc.gov.tw/A: No response was received from the server over UDP (tried 12 times). (203.65.72.1, 2001:4420:a603:ff03::148, UDP_-_NOEDNS_)
  • cdc.gov.tw/DNSKEY: No response was received from the server over TCP (tried 10 times). (61.57.41.148, TCP_-_EDNS0_4096_D_N)
  • cdc.gov.tw/DNSKEY: No response was received from the server over UDP (tried 4 times). (61.57.41.148, UDP_-_EDNS0_512_D_KN)
  • cdc.gov.tw/MX: No response was received from the server over TCP (tried 10 times). (61.57.41.148, TCP_-_EDNS0_4096_D_N)
  • cdc.gov.tw/MX: No response was received from the server over UDP (tried 4 times). (61.57.41.148, UDP_-_EDNS0_512_D_KN)
  • cdc.gov.tw/NS: No response was received from the server over UDP (tried 12 times). (203.65.72.1, 2001:4420:609d:1:0:5efe:cb41:4801, 2001:4420:a603:ff03::148, UDP_-_NOEDNS_)
  • cdc.gov.tw/SOA: No response was received from the server over TCP (tried 3 times). (61.57.41.148, TCP_-_EDNS0_4096_D_N)
  • gov.tw zone: The server(s) were not responsive to queries over UDP. (2001:c08:175:128::175:128)
  • gov.tw/DNSKEY: No response was received from the server over UDP (tried 4 times). (2001:45b1:0:5::24, 2001:45b1:0:5::25, UDP_-_EDNS0_512_D_KN)
Warnings (6)
  • cdc.gov.tw/A: No response was received from the server over UDP (tried 6 times) until the COOKIE EDNS option was removed. (61.57.41.148, UDP_-_EDNS0_4096_D_KN)
  • cdc.gov.tw/NS: No response was received from the server over UDP (tried 6 times) until the COOKIE EDNS option was removed. (61.57.41.148, UDP_-_EDNS0_4096_D_KN)
  • cdc.gov.tw/SOA: No response was received from the server over UDP (tried 6 times) until the COOKIE EDNS option was removed. (61.57.41.148, UDP_-_EDNS0_4096_D_KN, UDP_-_EDNS0_4096_D_KN_0x20)
  • cdc.gov.tw/TXT: No response was received from the server over UDP (tried 6 times) until the COOKIE EDNS option was removed. (61.57.41.148, UDP_-_EDNS0_4096_D_KN)
  • gov.tw to cdc.gov.tw: Authoritative AAAA records exist for cdcoutdns.cdc.gov.tw, but there are no corresponding AAAA glue records.
  • gov.tw to cdc.gov.tw: Authoritative AAAA records exist for outdns1.cdc.gov.tw, but there are no corresponding AAAA glue records.

DNSKEY legend

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