View on GitHub

DNSViz: A DNS visualization tool

vfc.com

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

RRset statusRRset status

Insecure (5)
  • vfc.com/A
  • vfc.com/MX
  • vfc.com/NS
  • vfc.com/SOA
  • vfc.com/TXT
Secure (2)
  • com/SOA
  • com/SOA

DNSKEY/DS/NSEC statusDNSKEY/DS/NSEC status

Secure (6)
  • ./DNSKEY (alg 8, id 20038)
  • ./DNSKEY (alg 8, id 20326)
  • NSEC3 proving non-existence of vfc.com/DS
  • com/DNSKEY (alg 13, id 19718)
  • com/DNSKEY (alg 13, id 59354)
  • com/DS (alg 13, id 19718)

Delegation statusDelegation status

Insecure (1)
  • com to vfc.com
Secure (1)
  • . to com

NoticesNotices

Errors (6)
  • com to vfc.com: DNSSEC was effectively downgraded because no response was received from the server over UDP (tried 11 times) with EDNS enabled. See RFC 6891, Sec. 7, RFC 2671, Sec. 5.3. (192.54.112.30, UDP_-_NOEDNS_)
  • com to vfc.com: No response was received from the server over UDP (tried 11 times) until EDNS was disabled (however, this server appeared to respond legitimately to other queries with EDNS enabled). See RFC 6891, Sec. 6.2.6. (192.54.112.30, UDP_-_EDNS0_4096_D_KN)
  • com to vfc.com: The DNSSEC records necessary to validate the response could not be retrieved from the server. See RFC 4035, Sec. 3.1.1, RFC 4035, Sec. 3.1.3. (192.54.112.30, UDP_-_EDNS0_4096_D_KN)
  • com zone: The server(s) responded over TCP with a malformed response or with an invalid RCODE. See RFC 1035, Sec. 4.1.1. (192.48.79.30)
  • com/SOA: The DNSSEC records necessary to validate the response could not be retrieved from the server. See RFC 4035, Sec. 3.1.1, RFC 4035, Sec. 3.1.3. (192.54.112.30, UDP_-_EDNS0_4096_D_KN)
  • vfc.com/DS has errors; select the "Denial of existence" DNSSEC option to see them.
Warnings (2)
  • com/DNSKEY (alg 13, id 19718): 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. (192.48.79.30, UDP_-_EDNS0_4096_D_KN)
  • com/DNSKEY (alg 13, id 59354): 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. (192.48.79.30, UDP_-_EDNS0_4096_D_KN)

DNSKEY legend

Full legend
SEP bit setSEP bit set
Revoke bit setRevoke bit set
Trust anchorTrust anchor
Download: png | svg
Warning JavaScript is required to make the graph below interactive.
DNSSEC authentication graph