columbia.edu
Updated:
2021-04-10 18:36:14 UTC (1103 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 (8)
- ./DNSKEY (alg 8, id 14631)
- ./DNSKEY (alg 8, id 20326)
- ./DNSKEY (alg 8, id 42351)
- NSEC3 proving non-existence of columbia.edu/DS
- edu/DNSKEY (alg 8, id 28065)
- edu/DNSKEY (alg 8, id 62987)
- edu/DNSKEY (alg 8, id 63587)
- edu/DS (alg 8, id 28065)
Delegation status
Insecure (1)
- edu to columbia.edu
Secure (1)
- . to edu
Notices
Errors (5)
- columbia.edu zone: The server(s) were not responsive to queries over UDP. (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). (2001:550:1:a::d, 2001:550:1:b::d, 2001:978:1:a::d, 2001:978:1:b::d, UDP_-_NOEDNS_)
- columbia.edu/DNSKEY: The response had an invalid RCODE (FORMERR). (158.143.96.8, UDP_-_EDNS0_512_D_KN)
- columbia.edu/MX: The response had an invalid RCODE (FORMERR). (158.143.96.8, UDP_-_EDNS0_512_D_KN)
- columbia.edu/NS: No response was received from the server over UDP (tried 12 times). (2001:550:1:a::d, 2001:550:1:b::d, 2001:978:1:a::d, 2001:978:1:b::d, UDP_-_NOEDNS_)
Warnings (6)
- columbia.edu/A: The response had an invalid RCODE (FORMERR) until the NSID EDNS option was removed. (158.143.96.8, UDP_-_EDNS0_4096_D_KN)
- columbia.edu/MX: The response had an invalid RCODE (FORMERR) until the NSID EDNS option was removed. (158.143.96.8, UDP_-_EDNS0_4096_D_KN)
- columbia.edu/NS: The response had an invalid RCODE (FORMERR) until the NSID EDNS option was removed. (158.143.96.8, UDP_-_EDNS0_4096_D_KN)
- columbia.edu/SOA: The response had an invalid RCODE (FORMERR) until the NSID EDNS option was removed. (158.143.96.8, TCP_-_EDNS0_4096_D_N)
- columbia.edu/SOA: The response had an invalid RCODE (FORMERR) until the NSID EDNS option was removed. (158.143.96.8, UDP_-_EDNS0_4096_D_KN, UDP_-_EDNS0_4096_D_KN_0x20)
- columbia.edu/TXT: The response had an invalid RCODE (FORMERR) until the NSID EDNS option was removed. (158.143.96.8, UDP_-_EDNS0_4096_D_KN)
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