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DNSViz: A DNS visualization tool

isc.org

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

RRset statusRRset status

Secure (8)
  • isc.org/A
  • isc.org/AAAA
  • isc.org/MX
  • isc.org/NS
  • isc.org/SOA
  • isc.org/SOA
  • isc.org/SOA
  • isc.org/TXT

DNSKEY/DS/NSEC statusDNSKEY/DS/NSEC status

Secure (12)
  • ./DNSKEY (alg 8, id 20326)
  • ./DNSKEY (alg 8, id 33853)
  • ./DNSKEY (alg 8, id 48903)
  • isc.org/DNSKEY (alg 13, id 27566)
  • isc.org/DNSKEY (alg 13, id 7250)
  • isc.org/DS (alg 13, id 7250)
  • org/DNSKEY (alg 7, id 17883)
  • org/DNSKEY (alg 7, id 33209)
  • org/DNSKEY (alg 7, id 37022)
  • org/DNSKEY (alg 7, id 9795)
  • org/DS (alg 7, id 9795)
  • org/DS (alg 7, id 9795)

Delegation statusDelegation status

Secure (2)
  • . to org
  • org to isc.org

NoticesNotices

Errors (21)
  • isc.org zone: The server(s) were not responsive to queries over TCP. See RFC 1035, Sec. 4.2. (149.20.64.3, 199.6.1.30, 2001:4f8:0:2::19)
  • isc.org zone: The server(s) were not responsive to queries over UDP. See RFC 1035, Sec. 4.2. (2001:500:71::30)
  • isc.org/A: No response was received from the server over UDP (tried 12 times). See RFC 1035, Sec. 4.2. (199.6.1.30, 2001:500:60::30, 2001:500:71::30, UDP_-_NOEDNS_)
  • isc.org/AAAA: No response was received from the server over UDP (tried 12 times). See RFC 1035, Sec. 4.2. (199.6.1.30, UDP_-_NOEDNS_)
  • isc.org/DNSKEY: No response was received from the server over UDP (tried 12 times). See RFC 1035, Sec. 4.2. (199.6.1.30, UDP_-_NOEDNS_)
  • isc.org/DNSKEY: No response was received from the server over UDP (tried 4 times). See RFC 1035, Sec. 4.2. (149.20.64.3, 199.6.1.30, 2001:4f8:0:2::19, UDP_-_EDNS0_512_D_K)
  • isc.org/DNSKEY: The TCP connection was interrupted (ECONNRESET). See RFC 1035, Sec. 4.2. (2001:4f8:0:2::19, TCP_-_EDNS0_4096_D)
  • isc.org/MX: No response was received from the server over UDP (tried 12 times). See RFC 1035, Sec. 4.2. (199.6.1.30, UDP_-_NOEDNS_)
  • isc.org/MX: No response was received from the server over UDP (tried 4 times). See RFC 1035, Sec. 4.2. (149.20.64.3, 199.6.1.30, 2001:4f8:0:2::19, UDP_-_EDNS0_512_D_K)
  • isc.org/MX: The TCP connection was interrupted (ECONNRESET). See RFC 1035, Sec. 4.2. (2001:4f8:0:2::19, TCP_-_EDNS0_4096_D_K)
  • isc.org/NS: DNSSEC was effectively downgraded because no response was received from the server over UDP (tried 10 times) with the DO bit set. See RFC 4035, Sec. 3.2.1. (2001:500:60::30, UDP_-_EDNS0_4096_)
  • isc.org/NS: No response was received from the server over UDP (tried 10 times) until the DO EDNS flag was cleared (however, this server appeared to respond legitimately to other queries with the DO EDNS flag set). See RFC 6891, Sec. 6.1.4. (2001:500:60::30, UDP_-_EDNS0_4096_D_K)
  • isc.org/NS: No response was received from the server over UDP (tried 12 times). See RFC 1035, Sec. 4.2. (2001:500:71::30, UDP_-_NOEDNS_)
  • isc.org/NS: 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. (2001:500:60::30, UDP_-_EDNS0_4096_D_K)
  • isc.org/SOA: No response was received from the server over TCP (tried 3 times). See RFC 1035, Sec. 4.2. (199.6.1.30, TCP_-_EDNS0_4096_D)
  • isc.org/SOA: No response was received from the server over TCP (tried 9 times). See RFC 1035, Sec. 4.2. (2001:4f8:0:2::19, TCP_-_EDNS0_4096_D)
  • isc.org/SOA: No response was received from the server over UDP (tried 12 times). See RFC 1035, Sec. 4.2. (2001:4f8:0:2::19, UDP_-_NOEDNS_, UDP_-_NOEDNS__0x20)
  • isc.org/SOA: The TCP connection was interrupted (ECONNRESET). See RFC 1035, Sec. 4.2. (149.20.64.3, TCP_-_EDNS0_4096_D)
  • isc.org/TXT: No response was received from the server over UDP (tried 12 times). See RFC 1035, Sec. 4.2. (199.6.1.30, 2001:4f8:0:2::19, UDP_-_NOEDNS_)
  • oja4nlebxr.isc.org/A has errors; select the "Denial of existence" DNSSEC option to see them.
  • isc.org/DNSKEY has errors; select the "Denial of existence" DNSSEC option to see them.
Warnings (22)
  • RRSIG isc.org/DS alg 7, id 33209: DNSSEC implementers are recommended against implementing signing with DNSSEC algorithm 7 (RSASHA1NSEC3SHA1). See RFC 8624, Sec. 3.1.
  • RRSIG org/DNSKEY alg 7, id 17883: DNSSEC implementers are recommended against implementing signing with DNSSEC algorithm 7 (RSASHA1NSEC3SHA1). See RFC 8624, Sec. 3.1.
  • RRSIG org/DNSKEY alg 7, id 17883: DNSSEC implementers are recommended against implementing signing with DNSSEC algorithm 7 (RSASHA1NSEC3SHA1). See RFC 8624, Sec. 3.1.
  • RRSIG org/DNSKEY alg 7, id 17883: DNSSEC implementers are recommended against implementing signing with DNSSEC algorithm 7 (RSASHA1NSEC3SHA1). See RFC 8624, Sec. 3.1.
  • RRSIG org/DNSKEY alg 7, id 17883: DNSSEC implementers are recommended against implementing signing with DNSSEC algorithm 7 (RSASHA1NSEC3SHA1). See RFC 8624, Sec. 3.1.
  • RRSIG org/DNSKEY alg 7, id 33209: DNSSEC implementers are recommended against implementing signing with DNSSEC algorithm 7 (RSASHA1NSEC3SHA1). See RFC 8624, Sec. 3.1.
  • RRSIG org/DNSKEY alg 7, id 33209: DNSSEC implementers are recommended against implementing signing with DNSSEC algorithm 7 (RSASHA1NSEC3SHA1). See RFC 8624, Sec. 3.1.
  • RRSIG org/DNSKEY alg 7, id 33209: DNSSEC implementers are recommended against implementing signing with DNSSEC algorithm 7 (RSASHA1NSEC3SHA1). See RFC 8624, Sec. 3.1.
  • RRSIG org/DNSKEY alg 7, id 33209: DNSSEC implementers are recommended against implementing signing with DNSSEC algorithm 7 (RSASHA1NSEC3SHA1). See RFC 8624, Sec. 3.1.
  • RRSIG org/DNSKEY alg 7, id 9795: DNSSEC implementers are recommended against implementing signing with DNSSEC algorithm 7 (RSASHA1NSEC3SHA1). See RFC 8624, Sec. 3.1.
  • RRSIG org/DNSKEY alg 7, id 9795: DNSSEC implementers are recommended against implementing signing with DNSSEC algorithm 7 (RSASHA1NSEC3SHA1). See RFC 8624, Sec. 3.1.
  • RRSIG org/DNSKEY alg 7, id 9795: DNSSEC implementers are recommended against implementing signing with DNSSEC algorithm 7 (RSASHA1NSEC3SHA1). See RFC 8624, Sec. 3.1.
  • RRSIG org/DNSKEY alg 7, id 9795: DNSSEC implementers are recommended against implementing signing with DNSSEC algorithm 7 (RSASHA1NSEC3SHA1). See RFC 8624, Sec. 3.1.
  • isc.org/NS: 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. (199.6.1.30, UDP_-_EDNS0_4096_D_K)
  • isc.org/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. (149.20.64.3, UDP_-_EDNS0_4096_D_K)
  • isc.org/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. (199.6.1.30, UDP_-_EDNS0_4096_D_K_0x20)
  • org/DS (alg 7, id 9795): DNSSEC implementers are prohibited from implementing signing with DS algorithm 1 (SHA-1). See RFC 8624, Sec. 3.2.
  • org/DS (alg 7, id 9795): DNSSEC implementers are prohibited from implementing signing with DS algorithm 1 (SHA-1). See RFC 8624, Sec. 3.2.
  • org/DS (alg 7, id 9795): 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.
  • org/DS (alg 7, id 9795): 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.
  • isc.org/DS has warnings; select the "Denial of existence" DNSSEC option to see them.
  • isc.org/CNAME 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