fb.me
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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.
1 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.
0 of 9 evaluated headers detected.
PTR: edge-star-mini-shv-02-ord5.facebook.com
Two or more IPv4 addresses receive full points.
AAAA availability.
At least one address family must resolve.
No successful HTTP response.
Final URL uses HTTPS.
DNS and emailPublished records and email configuration
A
1 record(s)157.240.254.35
AAAA
1 record(s)2a03:2880:f175:181:face:b00c:0:25de
CNAME
0 record(s)Not configured
MX
1 record(s)10 smtpin.vvv.facebook.com.
TXT
2 record(s)"csvg5znvp2lflc1fjsr5lyt71l3532w7" "v=spf1 a ~all"
NS
4 record(s)a.ns.facebook.com. c.ns.facebook.com. d.ns.facebook.com. b.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
0 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
157.240.254.35
No dataVisitor information
VisitorSMTPEmail port connectivity
smtpin.vvv.facebook.com
Port 25: Closed/unreachable - 16.7 ms - Port 465: Closed/unreachable - 0.5 ms - Port 587: Closed/unreachable - 8.7 ms -