facebook.de
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DiagnosticsMain findings and recommendations
1 IPv4 address(es) detected.
1 IPv6 address(es) detected.
4 NS record(s); 2 or more required.
Authoritative zone record.
Both DS and DNSKEY are required.
Certificate authority restriction.
Agreement between public resolvers.
0 MX record(s).
SPF policy published.
DMARC policy not found.
No tested DKIM selector responded.
Mail transport policy.
TLS reporting policy.
8 day(s) remaining.
Full points require at least 30 days remaining.
7 of 9 evaluated headers detected.
PTR: edge-star-shv-02-ord5.facebook.com
Two or more IPv4 addresses receive full points.
AAAA availability.
At least one address family must resolve.
HTTP/2 200
Final URL uses HTTPS.
DNS and emailPublished records and email configuration
A
1 record(s)157.240.254.12
AAAA
1 record(s)2a03:2880:f082:10d:face:b00c:0:2
CNAME
0 record(s)Not configured
MX
0 record(s)Not configured
TXT
1 record(s)"v=spf1 a ~all"
NS
4 record(s)d.ns.facebook.com. b.ns.facebook.com. a.ns.facebook.com. c.ns.facebook.com.
SOA
1 record(s)a.ns.facebook.com. dns.facebook.com. 4207849484 14400 1800 604800 3600
CAA
0 record(s)Not configured
DS
0 record(s)Not configured
DNSKEY
0 record(s)Not configured
RRSIG
0 record(s)Not configured
NSEC
0 record(s)Not configured
NSEC3
0 record(s)Not configured
SRV
0 record(s)Not configured
NAPTR
0 record(s)Not configured
TLSA
0 record(s)Not configured
SSHFP
0 record(s)Not configured
SPF
Configuredv=spf1 a ~all
DMARC
Not configuredNot configured
DKIM
Not foundNot configured
Analyzed webpageMetadata and HTTP response
Title and description
ExtractedHTTP
SSL and HTTP securityCertificate, protocol and security headers
SSL certificate
AvailableSecurity headers
7 activeDNS propagationComparison across public resolvers
Public resolver comparison
Review5 public resolvers queried.
8.8.8.81.1.1.19.9.9.9208.67.222.22294.140.14.14IP, geolocation and ASNAssociated network information
157.240.254.12
No dataVisitor information
VisitorSMTPEmail port connectivity
facebook.de
Port 25: Closed/unreachable - 0.7 ms - Port 465: Closed/unreachable - 4017.1 ms - Port 587: Closed/unreachable - 4029.3 ms -