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DNSViz: A DNS visualization tool

irs.gov

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

RRset statusRRset status

Bogus (1)
  • irs.gov/SOA
Secure (6)
  • irs.gov/A
  • irs.gov/AAAA
  • irs.gov/MX
  • irs.gov/NS
  • irs.gov/SOA
  • irs.gov/TXT

DNSKEY/DS/NSEC statusDNSKEY/DS/NSEC status

Bogus (1)
  • irs.gov/DNSKEY (alg 8, id 58818)
Secure (12)
  • ./DNSKEY (alg 8, id 20326)
  • ./DNSKEY (alg 8, id 46594)
  • gov/DNSKEY (alg 8, id 26665)
  • gov/DNSKEY (alg 8, id 7698)
  • gov/DS (alg 8, id 7698)
  • gov/DS (alg 8, id 7698)
  • irs.gov/DNSKEY (alg 8, id 13240)
  • irs.gov/DNSKEY (alg 8, id 39360)
  • irs.gov/DNSKEY (alg 8, id 44947)
  • irs.gov/DNSKEY (alg 8, id 60439)
  • irs.gov/DNSKEY (alg 8, id 8850)
  • irs.gov/DS (alg 8, id 60439)

Delegation statusDelegation status

Secure (2)
  • . to gov
  • gov to irs.gov

NoticesNotices

Errors (18)
  • RRSIG irs.gov/A alg 8, id 58818: The Signature Expiration field of the RRSIG RR (2020-08-06 03:00:58+00:00) is 2 days in the past. See RFC 4035, Sec. 5.3.1.
  • RRSIG irs.gov/AAAA alg 8, id 58818: The Signature Expiration field of the RRSIG RR (2020-08-06 03:00:58+00:00) is 2 days in the past. See RFC 4035, Sec. 5.3.1.
  • RRSIG irs.gov/DNSKEY alg 8, id 60439: The Signature Expiration field of the RRSIG RR (2020-08-06 03:00:58+00:00) is 2 days in the past. See RFC 4035, Sec. 5.3.1.
  • RRSIG irs.gov/DNSKEY alg 8, id 60439: The Signature Expiration field of the RRSIG RR (2020-08-06 03:00:58+00:00) is 2 days in the past. See RFC 4035, Sec. 5.3.1.
  • RRSIG irs.gov/DNSKEY alg 8, id 60439: The Signature Expiration field of the RRSIG RR (2020-08-06 03:00:58+00:00) is 2 days in the past. See RFC 4035, Sec. 5.3.1.
  • RRSIG irs.gov/DNSKEY alg 8, id 60439: The Signature Expiration field of the RRSIG RR (2020-08-06 03:00:58+00:00) is 2 days in the past. See RFC 4035, Sec. 5.3.1.
  • RRSIG irs.gov/MX alg 8, id 58818: The Signature Expiration field of the RRSIG RR (2020-08-06 03:00:58+00:00) is 2 days in the past. See RFC 4035, Sec. 5.3.1.
  • RRSIG irs.gov/NS alg 8, id 58818: The Signature Expiration field of the RRSIG RR (2020-08-06 03:00:58+00:00) is 2 days in the past. See RFC 4035, Sec. 5.3.1.
  • RRSIG irs.gov/SOA alg 8, id 58818: The Signature Expiration field of the RRSIG RR (2020-08-06 03:00:58+00:00) is 2 days in the past. See RFC 4035, Sec. 5.3.1.
  • RRSIG irs.gov/TXT alg 8, id 58818: The Signature Expiration field of the RRSIG RR (2020-08-06 03:00:58+00:00) is 2 days in the past. See RFC 4035, Sec. 5.3.1.
  • gov to irs.gov: 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. (152.216.13.164, 2610:30:0:13::164, TCP_-_EDNS0_4096_D_K, UDP_-_EDNS0_4096_D_K)
  • irs.gov zone: The server(s) were not responsive to queries over UDP. See RFC 1035, Sec. 4.2. (2610:30:2000:53::91)
  • irs.gov/A: No response was received from the server over UDP (tried 12 times). See RFC 1035, Sec. 4.2. (2610:30:2000:53::91, UDP_-_NOEDNS_)
  • irs.gov/DNSKEY (alg 8, id 58818): The DNSKEY RR was not found in the DNSKEY RRset returned by one or more servers. (152.216.7.164, 152.216.7.165, 152.216.11.132, 152.216.11.133, 152.216.13.165, 2610:30:0:13::165, 2610:30:2000:53::90, 2610:30:4000:53::90, 2610:30:4000:53::91, TCP_-_EDNS0_4096_D_K, UDP_-_EDNS0_4096_D_K)
  • irs.gov/NS: No response was received from the server over UDP (tried 12 times). See RFC 1035, Sec. 4.2. (2610:30:2000:53::91, UDP_-_NOEDNS_)
  • irs.gov/DNSKEY has errors; select the "Denial of existence" DNSSEC option to see them.
  • irs.gov/CNAME has errors; select the "Denial of existence" DNSSEC option to see them.
  • 5huz8x0aop.irs.gov/A has errors; select the "Denial of existence" DNSSEC option to see them.
Warnings (12)
  • gov/DS (alg 8, id 7698): DNSSEC implementers are prohibited from implementing signing with DS algorithm 1 (SHA-1). See RFC 8624, Sec. 3.2.
  • gov/DS (alg 8, id 7698): DNSSEC implementers are prohibited from implementing signing with DS algorithm 1 (SHA-1). See RFC 8624, Sec. 3.2.
  • gov/DS (alg 8, id 7698): 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/DS (alg 8, id 7698): 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/DS (alg 8, id 7698): The server appears to support DNS cookies but did not return a COOKIE option. See RFC 7873, Sec. 5.2.3. (2001:500:2f::f, UDP_-_EDNS0_4096_D_K)
  • gov/DS (alg 8, id 7698): The server appears to support DNS cookies but did not return a COOKIE option. See RFC 7873, Sec. 5.2.3. (2001:500:2f::f, UDP_-_EDNS0_4096_D_K)
  • gov/DS (alg 8, id 7698): The server appears to support DNS cookies but did not return a COOKIE option. See RFC 7873, Sec. 5.2.3. (2001:500:2f::f, UDP_-_EDNS0_4096_D_K)
  • gov/DS (alg 8, id 7698): The server appears to support DNS cookies but did not return a COOKIE option. See RFC 7873, Sec. 5.2.3. (2001:500:2f::f, UDP_-_EDNS0_4096_D_K)
  • irs.gov/DNSKEY (alg 8, id 13240): The DNSKEY RR was not found in the DNSKEY RRset returned by one or more servers. (152.216.13.164, 2610:30:0:13::164, TCP_-_EDNS0_4096_D_K, UDP_-_EDNS0_4096_D_K)
  • irs.gov/DNSKEY (alg 8, id 39360): The DNSKEY RR was not found in the DNSKEY RRset returned by one or more servers. (152.216.13.164, 2610:30:0:13::164, TCP_-_EDNS0_4096_D_K, UDP_-_EDNS0_4096_D_K)
  • 5huz8x0aop.irs.gov/A has warnings; select the "Denial of existence" DNSSEC option to see them.
  • irs.gov/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