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DNSViz: A DNS visualization tool

irs.gov

DNSSEC options (hide)
  1. |?|
  2. |?|
  3. |?|
  4. |?|
  5. |?|
  6. |?|
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  8. |?|
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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 (11)
  • ./DNSKEY (alg 8, id 20326)
  • ./DNSKEY (alg 8, id 48903)
  • gov/DNSKEY (alg 8, id 40176)
  • gov/DNSKEY (alg 8, id 7698)
  • gov/DS (alg 8, id 7698)
  • gov/DS (alg 8, id 7698)
  • irs.gov/DNSKEY (alg 8, id 11886)
  • irs.gov/DNSKEY (alg 8, id 44484)
  • irs.gov/DNSKEY (alg 8, id 44947)
  • irs.gov/DNSKEY (alg 8, id 60439)
  • irs.gov/DS (alg 8, id 60439)

Delegation statusDelegation status

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

NoticesNotices

Errors (13)
  • 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. (152.216.7.164, 2610:30:4000:53::90)
  • 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. (152.216.7.164, 2610:30:4000:53::90)
  • irs.gov/A: The response had an invalid RCODE (SERVFAIL). See RFC 1035, Sec. 4.1.1. (152.216.7.164, 2610:30:4000:53::90, UDP_-_NOEDNS_)
  • irs.gov/AAAA: The response had an invalid RCODE (SERVFAIL). See RFC 1035, Sec. 4.1.1. (152.216.7.164, 2610:30:4000:53::90, UDP_-_NOEDNS_)
  • irs.gov/DNSKEY: The response had an invalid RCODE (SERVFAIL). See RFC 1035, Sec. 4.1.1. (152.216.7.164, 2610:30:4000:53::90, UDP_-_EDNS0_512_D_K, UDP_-_NOEDNS_)
  • irs.gov/MX: The response had an invalid RCODE (SERVFAIL). See RFC 1035, Sec. 4.1.1. (152.216.7.164, 2610:30:4000:53::90, UDP_-_EDNS0_512_D_K, UDP_-_NOEDNS_)
  • irs.gov/NS: The response had an invalid RCODE (SERVFAIL). See RFC 1035, Sec. 4.1.1. (152.216.7.164, 2610:30:4000:53::90, UDP_-_NOEDNS_)
  • irs.gov/SOA: The response had an invalid RCODE (SERVFAIL). See RFC 1035, Sec. 4.1.1. (152.216.7.164, 2610:30:4000:53::90, TCP_-_NOEDNS_)
  • irs.gov/SOA: The response had an invalid RCODE (SERVFAIL). See RFC 1035, Sec. 4.1.1. (152.216.7.164, 2610:30:4000:53::90, UDP_-_NOEDNS_, UDP_-_NOEDNS__0x20)
  • irs.gov/TXT: The response had an invalid RCODE (SERVFAIL). See RFC 1035, Sec. 4.1.1. (152.216.7.164, 2610:30:4000:53::90, UDP_-_NOEDNS_)
  • lr0v8texzg.irs.gov/A 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.
  • irs.gov/CNAME has errors; select the "Denial of existence" DNSSEC option to see them.
Warnings (6)
  • 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.
  • lr0v8texzg.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