www.centrum.cz | DNSViz

www.centrum.cz

Updated: 2021-05-15 19:42:09 UTC (4 years ago) Go to most recent »

DNSSEC options (hide)

|?| RR types:
|?| DNSSEC algorithms:
|?| DS digest algorithms:
|?| Denial of existence:
|?| Redundant edges:
|?| Ignore RFC 8624:
|?| Ignore RFC 9276:
|?| Multi-signer:
|?| Trust anchors:
- Root zone KSK
|?| Additional trusted keys:

Notices

DNSSEC Authentication Chain

RRset status

Insecure (11)

cloudfront.net/SOA
d3ngxn1oh0qgdy.cloudfront.net/A
d3ngxn1oh0qgdy.cloudfront.net/A
d3ngxn1oh0qgdy.cloudfront.net/AAAA
d3ngxn1oh0qgdy.cloudfront.net/AAAA
d3ngxn1oh0qgdy.cloudfront.net/AAAA
d3ngxn1oh0qgdy.cloudfront.net/AAAA
d3ngxn1oh0qgdy.cloudfront.net/AAAA
d3ngxn1oh0qgdy.cloudfront.net/AAAA
d3ngxn1oh0qgdy.cloudfront.net/AAAA
d3ngxn1oh0qgdy.cloudfront.net/AAAA

Secure (3)

net/SOA
net/SOA
www.centrum.cz/CNAME

DNSKEY/DS/NSEC status

Secure (12)

./DNSKEY (alg 8, id 14631)
./DNSKEY (alg 8, id 20326)
NSEC3 proving non-existence of cloudfront.net/DS
centrum.cz/DNSKEY (alg 13, id 2371)
centrum.cz/DNSKEY (alg 13, id 34505)
centrum.cz/DS (alg 13, id 2371)
cz/DNSKEY (alg 13, id 20237)
cz/DNSKEY (alg 13, id 26955)
cz/DS (alg 13, id 20237)
net/DNSKEY (alg 8, id 35886)
net/DNSKEY (alg 8, id 6203)
net/DS (alg 8, id 35886)

Delegation status

Insecure (2)

cloudfront.net to d3ngxn1oh0qgdy.cloudfront.net
net to cloudfront.net

Secure (3)

. to cz
. to net
cz to centrum.cz

Notices

Errors (1)

cloudfront.net/DNSKEY: No response was received from the server over UDP (tried 4 times). See RFC 1035, Sec. 4.2. (205.251.193.162, UDP_-_EDNS0_512_D_KN)

Warnings (1)

net to cloudfront.net: Authoritative AAAA records exist for ns-666.awsdns-19.net, but there are no corresponding AAAA glue records. See RFC 1034, Sec. 4.2.2.

DNSKEY legend

Full legend

	SEP bit set
	Revoke bit set
	Trust anchor

See also

DNSSEC Debugger by Verisign Labs.

Download: png | svg

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DNSSEC authentication graph