iastate.edu

Updated: 2025-04-21 14:25:20 UTC (77 days ago) Update now

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

Secure (6)

iastate.edu/A
iastate.edu/MX
iastate.edu/NS
iastate.edu/NSEC3PARAM
iastate.edu/SOA
iastate.edu/TXT

DNSKEY/DS/NSEC status

Secure (14)

./DNSKEY (alg 8, id 20326)
./DNSKEY (alg 8, id 38696)
./DNSKEY (alg 8, id 53148)
edu/DNSKEY (alg 13, id 35663)
edu/DNSKEY (alg 13, id 57579)
edu/DS (alg 13, id 35663)
iastate.edu/DNSKEY (alg 13, id 15561)
iastate.edu/DNSKEY (alg 13, id 30684)
iastate.edu/DNSKEY (alg 13, id 46000)
iastate.edu/DNSKEY (alg 13, id 49445)
iastate.edu/DNSKEY (alg 13, id 54455)
iastate.edu/DS (alg 13, id 15561)
iastate.edu/DS (alg 13, id 15561)
iastate.edu/DS (alg 13, id 30684)

Delegation status

Secure (2)

. to edu
edu to iastate.edu

Notices

Errors (8)

iastate.edu/CDNSKEY: No response was received from the server over UDP (tried 12 times). See RFC 1035, Sec. 4.2. (128.255.13.69, 129.186.67.129, 129.186.67.145, 2610:130:101:112::2, 2610:130:102:112::2, 2620:0:e50:6010::11, UDP_-_NOEDNS_)
iastate.edu/CDS: No response was received from the server over UDP (tried 12 times). See RFC 1035, Sec. 4.2. (128.255.13.69, 129.186.67.129, 129.186.67.145, 2610:130:101:112::2, 2610:130:102:112::2, 2620:0:e50:6010::11, UDP_-_NOEDNS_)
iastate.edu/DNSKEY: No response was received from the server over UDP (tried 4 times). See RFC 1035, Sec. 4.2. (128.255.13.69, UDP_-_EDNS0_512_D_KN)
iastate.edu/NS: No response was received from the server over UDP (tried 12 times). See RFC 1035, Sec. 4.2. (128.255.13.69, 2620:0:e50:6010::11, UDP_-_NOEDNS_)
m860o.9ahto.iastate.edu/A has errors; select the "Denial of existence" DNSSEC option to see them.
iastate.edu/CNAME has errors; select the "Denial of existence" DNSSEC option to see them.
iastate.edu/DNSKEY has errors; select the "Denial of existence" DNSSEC option to see them.
iastate.edu/AAAA has errors; select the "Denial of existence" DNSSEC option to see them.

Warnings (11)

iastate.edu/A: No response was received from the server over UDP (tried 6 times) until the COOKIE EDNS option was removed (however, this server appeared to respond legitimately to other queries with the COOKIE EDNS option present). See RFC 6891, Sec. 6.1.2. (128.255.13.69, UDP_-_EDNS0_4096_D_KN)
iastate.edu/A: 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. (2620:0:e50:6010::11, UDP_-_EDNS0_4096_D_KN)
iastate.edu/DS (alg 13, id 15561): DNSSEC implementers are prohibited from implementing signing with DS algorithm 1 (SHA-1). See RFC 8624, Sec. 3.2.
iastate.edu/DS (alg 13, id 15561): DNSSEC implementers are prohibited from implementing signing with DS algorithm 1 (SHA-1). See RFC 8624, Sec. 3.2.
iastate.edu/DS (alg 13, id 15561): 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.
iastate.edu/DS (alg 13, id 15561): 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.
iastate.edu/SOA: 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. (128.255.13.69, UDP_-_EDNS0_4096_D_KN)
iastate.edu/TXT: No response was received from the server over UDP (tried 6 times) until the COOKIE EDNS option was removed (however, this server appeared to respond legitimately to other queries with the COOKIE EDNS option present). See RFC 6891, Sec. 6.1.2. (2620:0:e50:6010::11, UDP_-_EDNS0_4096_D_KN)
m860o.9ahto.iastate.edu/A has warnings; select the "Denial of existence" DNSSEC option to see them.
iastate.edu/CNAME has warnings; select the "Denial of existence" DNSSEC option to see them.
iastate.edu/AAAA has warnings; select the "Denial of existence" DNSSEC option to see them.