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DNSViz: A DNS visualization tool

iastate.edu

Updated: 2025-04-21 14:25:20 UTC (77 days ago) Update now
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DNSSEC options (hide)
  1. |?|
  2. |?|
  3. |?|
  4. |?|
  5. |?|
  6. |?|
  7. |?|
  8. |?|
  9. |?|
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Notices
DNSSEC Authentication Chain

RRset statusRRset status

Secure (6)
  • iastate.edu/A
  • iastate.edu/MX
  • iastate.edu/NS
  • iastate.edu/NSEC3PARAM
  • iastate.edu/SOA
  • iastate.edu/TXT

DNSKEY/DS/NSEC statusDNSKEY/DS/NSEC status

Secure (14)
  • ./DNSKEY (alg 8, id 20326)
  • ./DNSKEY (alg 8, id 38696)
  • ./DNSKEY (alg 8, id 53148)
  • edu/DNSKEY (alg 13, id 35663)
  • edu/DNSKEY (alg 13, id 57579)
  • edu/DS (alg 13, id 35663)
  • iastate.edu/DNSKEY (alg 13, id 15561)
  • iastate.edu/DNSKEY (alg 13, id 30684)
  • iastate.edu/DNSKEY (alg 13, id 46000)
  • iastate.edu/DNSKEY (alg 13, id 49445)
  • iastate.edu/DNSKEY (alg 13, id 54455)
  • iastate.edu/DS (alg 13, id 15561)
  • iastate.edu/DS (alg 13, id 15561)
  • iastate.edu/DS (alg 13, id 30684)

Delegation statusDelegation status

Secure (2)
  • . to edu
  • edu to iastate.edu

NoticesNotices

Errors (8)
  • iastate.edu/CDNSKEY: No response was received from the server over UDP (tried 12 times). See RFC 1035, Sec. 4.2. (128.255.13.69, 129.186.67.129, 129.186.67.145, 2610:130:101:112::2, 2610:130:102:112::2, 2620:0:e50:6010::11, UDP_-_NOEDNS_)
  • iastate.edu/CDS: No response was received from the server over UDP (tried 12 times). See RFC 1035, Sec. 4.2. (128.255.13.69, 129.186.67.129, 129.186.67.145, 2610:130:101:112::2, 2610:130:102:112::2, 2620:0:e50:6010::11, UDP_-_NOEDNS_)
  • iastate.edu/DNSKEY: No response was received from the server over UDP (tried 4 times). See RFC 1035, Sec. 4.2. (128.255.13.69, UDP_-_EDNS0_512_D_KN)
  • iastate.edu/NS: No response was received from the server over UDP (tried 12 times). See RFC 1035, Sec. 4.2. (128.255.13.69, 2620:0:e50:6010::11, UDP_-_NOEDNS_)
  • m860o.9ahto.iastate.edu/A has errors; select the "Denial of existence" DNSSEC option to see them.
  • iastate.edu/CNAME has errors; select the "Denial of existence" DNSSEC option to see them.
  • iastate.edu/DNSKEY has errors; select the "Denial of existence" DNSSEC option to see them.
  • iastate.edu/AAAA has errors; select the "Denial of existence" DNSSEC option to see them.
Warnings (11)
  • iastate.edu/A: 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. (128.255.13.69, UDP_-_EDNS0_4096_D_KN)
  • iastate.edu/A: 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. (2620:0:e50:6010::11, UDP_-_EDNS0_4096_D_KN)
  • iastate.edu/DS (alg 13, id 15561): DNSSEC implementers are prohibited from implementing signing with DS algorithm 1 (SHA-1). See RFC 8624, Sec. 3.2.
  • iastate.edu/DS (alg 13, id 15561): DNSSEC implementers are prohibited from implementing signing with DS algorithm 1 (SHA-1). See RFC 8624, Sec. 3.2.
  • iastate.edu/DS (alg 13, id 15561): DS records with digest type 1 (SHA-1) are ignored when DS records with digest type 2 (SHA-256) exist in the same RRset. See RFC 4509, Sec. 3.
  • iastate.edu/DS (alg 13, id 15561): DS records with digest type 1 (SHA-1) are ignored when DS records with digest type 2 (SHA-256) exist in the same RRset. See RFC 4509, Sec. 3.
  • iastate.edu/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. (128.255.13.69, UDP_-_EDNS0_4096_D_KN)
  • iastate.edu/TXT: 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. (2620:0:e50:6010::11, UDP_-_EDNS0_4096_D_KN)
  • m860o.9ahto.iastate.edu/A has warnings; select the "Denial of existence" DNSSEC option to see them.
  • iastate.edu/CNAME has warnings; select the "Denial of existence" DNSSEC option to see them.
  • iastate.edu/AAAA 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