usf.edu
Updated:
2025-10-27 21:08:56 UTC (22 days ago)
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Notices
DNSSEC Authentication Chain
RRset status
Insecure (5)
- usf.edu/A
- usf.edu/MX
- usf.edu/NS
- usf.edu/SOA
- usf.edu/TXT
Secure (1)
- edu/SOA
DNSKEY/DS/NSEC status
Secure (7)
- ./DNSKEY (alg 8, id 20326)
- ./DNSKEY (alg 8, id 38696)
- ./DNSKEY (alg 8, id 61809)
- NSEC3 proving non-existence of usf.edu/DS
- edu/DNSKEY (alg 13, id 35663)
- edu/DNSKEY (alg 13, id 35999)
- edu/DS (alg 13, id 35663)
Delegation status
Insecure (1)
- edu to usf.edu
Secure (1)
- . to edu
Notices
Warnings (8)
- usf.edu/NS: 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. (2607:fe50:0:f201::2, UDP_-_EDNS0_4096_D_KN)
- usf.edu/SOA: No response was received from the server over UDP (tried 7 times) until the NSID EDNS option was removed (however, this server appeared to respond legitimately to other queries with the NSID EDNS option present). See RFC 6891, Sec. 6.1.2. (2607:fe50:0:f201::2, UDP_-_EDNS0_4096_D_KN_0x20)
- usf.edu/SOA: No response was received from the server over UDP (tried 8 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. (2607:fe50:0:102::2, UDP_-_EDNS0_4096_D_KN)
- usf.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. (2607:fe50:0:102::2, UDP_-_EDNS0_4096_D_KN_0x20)
- usf.edu/CDNSKEY has warnings; select the "Denial of existence" DNSSEC option to see them.
- usf.edu/AAAA has warnings; select the "Denial of existence" DNSSEC option to see them.
- usf.edu/CDS has warnings; select the "Denial of existence" DNSSEC option to see them.
- usf.edu/DNSKEY has warnings; select the "Denial of existence" DNSSEC option to see them.
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