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DNSViz: A DNS visualization tool

irs.gov

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

RRset statusRRset status

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

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 (16)
  • irs.gov zone: The server(s) responded over TCP with a malformed response or with an invalid RCODE. See RFC 1035, Sec. 4.1.1. (152.216.13.164, 2610:30:0:13::164)
  • irs.gov zone: The server(s) responded over UDP with a malformed response or with an invalid RCODE. See RFC 1035, Sec. 4.1.1. (152.216.13.164, 2610:30:0:13::164)
  • 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/A: The response had an invalid RCODE (SERVFAIL). See RFC 1035, Sec. 4.1.1. (152.216.13.164, 2610:30:0:13::164, UDP_-_NOEDNS_)
  • irs.gov/AAAA: The response had an invalid RCODE (SERVFAIL). See RFC 1035, Sec. 4.1.1. (152.216.13.164, 2610:30:0:13::164, UDP_-_NOEDNS_)
  • irs.gov/DNSKEY: The response had an invalid RCODE (SERVFAIL). See RFC 1035, Sec. 4.1.1. (152.216.13.164, 2610:30:0:13::164, UDP_-_EDNS0_512_D_K, UDP_-_NOEDNS_)
  • irs.gov/MX: The response had an invalid RCODE (SERVFAIL). See RFC 1035, Sec. 4.1.1. (152.216.13.164, 2610:30:0:13::164, UDP_-_EDNS0_512_D_K, UDP_-_NOEDNS_)
  • 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/NS: The response had an invalid RCODE (SERVFAIL). See RFC 1035, Sec. 4.1.1. (152.216.13.164, 2610:30:0:13::164, UDP_-_NOEDNS_)
  • irs.gov/SOA: The response had an invalid RCODE (SERVFAIL). See RFC 1035, Sec. 4.1.1. (152.216.13.164, 2610:30:0:13::164, TCP_-_NOEDNS_)
  • irs.gov/SOA: The response had an invalid RCODE (SERVFAIL). See RFC 1035, Sec. 4.1.1. (152.216.13.164, 2610:30:0:13::164, UDP_-_NOEDNS_, UDP_-_NOEDNS__0x20)
  • irs.gov/TXT: The response had an invalid RCODE (SERVFAIL). See RFC 1035, Sec. 4.1.1. (152.216.13.164, 2610:30:0:13::164, UDP_-_NOEDNS_)
  • 5n46mjwse8.irs.gov/A 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.
  • irs.gov/DNSKEY has errors; select the "Denial of existence" DNSSEC option to see them.
Warnings (10)
  • 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)
  • 5n46mjwse8.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