facebook.com
Updated:
2021-10-04 21:27:10 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 (2)
- com/SOA
- 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 (1)
- facebook.com/MX: No response was received from the server over UDP (tried 4 times). See RFC 1035, Sec. 4.2. (129.134.30.12, UDP_-_EDNS0_512_D_KN)
Warnings (10)
- 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, UDP_-_EDNS0_4096_D_KN)
- facebook.com/MX: 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, UDP_-_EDNS0_4096_D_KN)
- facebook.com/NS: 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. (129.134.30.12, 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. (129.134.30.12, UDP_-_EDNS0_4096_D_KN, UDP_-_EDNS0_4096_D_KN_0x20)
- u6swagojbc.facebook.com/A has warnings; select the "Denial of existence" DNSSEC option to see them.
- 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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