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DNSViz: A DNS visualization tool

gov.dz

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

RRset statusRRset status

Insecure (2)
  • gov.dz/NS
  • gov.dz/SOA
Secure (1)
  • dz/SOA

DNSKEY/DS/NSEC statusDNSKEY/DS/NSEC status

Secure (8)
  • ./DNSKEY (alg 8, id 11019)
  • ./DNSKEY (alg 8, id 20326)
  • ./DNSKEY (alg 8, id 60955)
  • NSEC proving non-existence of gov.dz/DS
  • dz/DNSKEY (alg 8, id 17380)
  • dz/DNSKEY (alg 8, id 45579)
  • dz/DS (alg 8, id 17380)
  • dz/DS (alg 8, id 17380)

Delegation statusDelegation status

Insecure (1)
  • dz to gov.dz
Secure (1)
  • . to dz

NoticesNotices

Errors (11)
  • . to dz: No valid RRSIGs made by a key corresponding to a DS RR were found covering the DNSKEY RRset, resulting in no secure entry point (SEP) into the zone. See RFC 4035, Sec. 2.2, RFC 6840, Sec. 5.11. (2001:43f8:120::36, TCP_-_NOEDNS_)
  • . to dz: The DS RRset for the zone included algorithm 8 (RSASHA256), but no DS RR matched a DNSKEY with algorithm 8 that signs the zone's DNSKEY RRset. See RFC 4035, Sec. 2.2, RFC 6840, Sec. 5.11. (2001:43f8:120::36, TCP_-_NOEDNS_)
  • dz zone: The server(s) were not responsive to queries over UDP. See RFC 1035, Sec. 4.2. (2001:4340:1030:2::2)
  • dz/DNSKEY (alg 8, id 17380): 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. (2001:43f8:120::36, TCP_-_NOEDNS_)
  • dz/DNSKEY (alg 8, id 17380): 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. (2001:43f8:120::36, UDP_-_EDNS0_4096_D_KN)
  • dz/DNSKEY (alg 8, id 45579): 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. (2001:43f8:120::36, TCP_-_NOEDNS_)
  • dz/DNSKEY (alg 8, id 45579): 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. (2001:43f8:120::36, UDP_-_EDNS0_4096_D_KN)
  • dz/DNSKEY: No response was received from the server over UDP (tried 4 times). See RFC 1035, Sec. 4.2. (196.216.168.36, UDP_-_EDNS0_512_D_KN)
  • gov.dz zone: The server(s) were not responsive to queries over UDP. See RFC 1035, Sec. 4.2. (2001:4340:1030:2::2)
  • gov.dz/NS: No response was received from the server over UDP (tried 12 times). See RFC 1035, Sec. 4.2. (2001:4340:1030:2::2, UDP_-_NOEDNS_)
  • gov.dz/A has errors; select the "Denial of existence" DNSSEC option to see them.
Warnings (6)
  • dz to gov.dz: 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. (2001:43f8:120::36, UDP_-_EDNS0_4096_D_KN)
  • dz/DS (alg 8, id 17380): DNSSEC implementers are prohibited from implementing signing with DS algorithm 1 (SHA-1). See RFC 8624, Sec. 3.2.
  • dz/DS (alg 8, id 17380): DNSSEC implementers are prohibited from implementing signing with DS algorithm 1 (SHA-1). See RFC 8624, Sec. 3.2.
  • dz/DS (alg 8, id 17380): 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.
  • dz/DS (alg 8, id 17380): 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.
  • gov.dz/DS 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