columbia.edu
Updated:
2023-01-26 00:39:59 UTC (666 days ago)
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Notices
DNSSEC Authentication Chain
RRset status
Insecure (5)
- columbia.edu/A
- columbia.edu/MX
- columbia.edu/NS
- columbia.edu/SOA
- columbia.edu/TXT
Secure (2)
- edu/SOA
- edu/SOA
DNSKEY/DS/NSEC status
Secure (6)
- ./DNSKEY (alg 8, id 20326)
- ./DNSKEY (alg 8, id 951)
- NSEC3 proving non-existence of columbia.edu/DS
- edu/DNSKEY (alg 8, id 28065)
- edu/DNSKEY (alg 8, id 34085)
- edu/DS (alg 8, id 28065)
Delegation status
Insecure (1)
- edu to columbia.edu
Secure (1)
- . to edu
Notices
Errors (3)
- columbia.edu zone: The server(s) were not responsive to queries over UDP. See RFC 1035, Sec. 4.2. (2001:550:1:a::d, 2001:550:1:b::d, 2001:978:1:a::d, 2001:978:1:b::d)
- columbia.edu/A: No response was received from the server over UDP (tried 12 times). See RFC 1035, Sec. 4.2. (2001:550:1:a::d, 2001:550:1:b::d, 2001:978:1:a::d, 2001:978:1:b::d, UDP_-_NOEDNS_)
- columbia.edu/NS: No response was received from the server over UDP (tried 12 times). See RFC 1035, Sec. 4.2. (2001:550:1:a::d, 2001:550:1:b::d, 2001:978:1:a::d, 2001:978:1:b::d, UDP_-_NOEDNS_)
Warnings (1)
- edu to columbia.edu: Authoritative AAAA records exist for ext-ns1.columbia.edu, but there are no corresponding AAAA glue records. See RFC 1034, Sec. 4.2.2.
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