facebook.com
Updated:
2021-10-04 21:28:06 UTC (1149 days ago)
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Notices
DNSSEC Authentication Chain
RRset status
Insecure (8)
- facebook.com/A
- facebook.com/AAAA
- facebook.com/MX
- facebook.com/NS
- facebook.com/SOA
- facebook.com/SOA
- facebook.com/SOA
- facebook.com/TXT
Secure (1)
- com/SOA
DNSKEY/DS/NSEC status
Secure (7)
- ./DNSKEY (alg 8, id 14748)
- ./DNSKEY (alg 8, id 20326)
- ./DNSKEY (alg 8, id 26838)
- NSEC3 proving non-existence of facebook.com/DS
- com/DNSKEY (alg 8, id 30909)
- com/DNSKEY (alg 8, id 39343)
- com/DS (alg 8, id 30909)
Delegation status
Insecure (1)
- com to facebook.com
Secure (1)
- . to com
Notices
Errors (10)
- facebook.com/A: No response was received from the server over UDP (tried 12 times). See RFC 1035, Sec. 4.2. (185.89.218.12, UDP_-_NOEDNS_)
- facebook.com/AAAA: No response was received from the server over UDP (tried 12 times). See RFC 1035, Sec. 4.2. (185.89.218.12, UDP_-_NOEDNS_)
- facebook.com/DNSKEY: No response was received from the server over UDP (tried 12 times). See RFC 1035, Sec. 4.2. (185.89.218.12, UDP_-_NOEDNS_)
- facebook.com/DNSKEY: No response was received from the server over UDP (tried 4 times). See RFC 1035, Sec. 4.2. (129.134.31.12, 185.89.218.12, 2a03:2880:f0fc:c:face:b00c:0:35, UDP_-_EDNS0_512_D_KN)
- facebook.com/MX: No response was received from the server over UDP (tried 4 times). See RFC 1035, Sec. 4.2. (185.89.218.12, UDP_-_EDNS0_512_D_KN)
- facebook.com/MX: The server was not reachable over TCP (EHOSTUNREACH). See RFC 1035, Sec. 4.2. (185.89.218.12, TCP_-_EDNS0_4096_D)
- facebook.com/SOA: No response was received from the server over UDP (tried 12 times). See RFC 1035, Sec. 4.2. (185.89.218.12, UDP_-_NOEDNS__0x20)
- facebook.com/TXT: No response was received from the server over UDP (tried 12 times). See RFC 1035, Sec. 4.2. (185.89.218.12, UDP_-_NOEDNS_)
- facebook.com/DNSKEY has errors; select the "Denial of existence" DNSSEC option to see them.
- uzap4cnfe5.facebook.com/A has errors; select the "Denial of existence" DNSSEC option to see them.
Warnings (9)
- com/DS (alg 8, id 30909): The server appears to support DNS cookies but did not return a COOKIE option. See RFC 7873, Sec. 5.2.3. (193.0.14.129, UDP_-_EDNS0_4096_D_KN)
- com/DS (alg 8, id 30909): The server appears to support DNS cookies but did not return a COOKIE option. See RFC 7873, Sec. 5.2.3. (193.0.14.129, UDP_-_EDNS0_4096_D_KN)
- facebook.com/AAAA: 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. (129.134.30.12, 2a03:2880:f0fc:c:face:b00c:0:35, UDP_-_EDNS0_4096_D_KN)
- facebook.com/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. (129.134.31.12, UDP_-_EDNS0_4096_D_KN)
- facebook.com/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. (129.134.31.12, 2a03:2880:f0fc:c:face:b00c:0:35, UDP_-_EDNS0_4096_D_KN, UDP_-_EDNS0_4096_D_KN_0x20)
- facebook.com/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. (129.134.31.12, UDP_-_EDNS0_4096_D_KN)
- facebook.com/CNAME has warnings; select the "Denial of existence" DNSSEC option to see them.
- facebook.com/DNSKEY has warnings; select the "Denial of existence" DNSSEC option to see them.
- facebook.com/NSEC3PARAM has warnings; select the "Denial of existence" DNSSEC option to see them.
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