fb.com
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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.
2 MX record(s).
SPF policy published.
DMARC policy published.
A DKIM selector was verified.
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-mini-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)157.240.254.35
AAAA
1 record(s)2a03:2880:f175:181:face:b00c:0:25de
CNAME
0 record(s)Not configured
MX
2 record(s)10 mxb-00082601.gslb.pphosted.com. 10 mxa-00082601.gslb.pphosted.com.
TXT
13 record(s)"parkable-domain-verification=N89SxXel0S4pUXDFVpckFmXIO9MUvN4Or0bO_Lcb8Os=" "mentimeter-8599dcd1-e0da-4326-882e-7570e7c942fb" "I2B7AuxY6G1G_NeiaHF-9A0zn-3NDBnlOBi4zItNCU8" "586957ce-d11e-4efa-9fe5-a887498bf838" "mentimeter-16bdc82d-93be-47de-a6d4-fd6adb17c403" "docusign=ad7f789d-eff1-4283-9d90-fdc9484527e1" "MS=ms56927146" "smartsheet-site-validation=r-TtxwzdAh2KN_Zi6mTLGu02fz-9vQU4" "v=spf1 redirect=_spf.fb.com" "google-site-verification=Dsycvk_Ky3uQjdvuPrI_Z6A98lWghNTntdS4LuATOj8" "G3X1k1XGYGra1nUpTv7Rdk2wAEFHfkKIr9/4/6+Nu67Ks9cR8xaiqAZPPhis9lGD6mb/+9vygIr4QKXIpxIc7w==" "atlassian-domain-verification=I7HLjLnlhJiDT58wzrru2Pd/2cRWa3AKlgCjDPOO43GMP7H0QuafH6eBts3D1GaP" "smartsheet-site-validation=sB5xgx-1nsnQCgORYUhnyDG3Jr739OxJ"
NS
4 record(s)d.ns.facebook.com. a.ns.facebook.com. c.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 redirect=_spf.fb.com
DMARC
Configuredv=DMARC1; p=reject; pct=100; rua=mailto:a@dmarc.facebookmail.com
DKIM
Selector googlev=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA0BvvGggwjm+X9FLAB0cA8kZCtRYrjeCsdBb4mFGZUn6sO5OCvLTFHa6MVHlYU46dfsQnA9SCsjoSHJ9u4horZ7mXrP4AOexLKxuhY7mQJ2qZjug93WDPD60BWVuEZyzWaoNQbVGx2nERotVLKNqNPBXVXvZ2GcsHKVROLR36gQIJlZO+MNmBGmfVsd1caYXaFn6ZgcHh1hV8ppa4StMBY+b9dr/rMfe+xE1bkUdlPaTQkjaf5kKYHaOS6X+2xPnm3WkI2h2tVTgmn0sQX0jM3nqLVgbCn6waSVmosbYiwPbhZDjZOX6Nk/Aisc6xjjf5wv+PUq+7XrTj7sQ8FV0OYQIDAQAB
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
157.240.254.35
No dataVisitor information
VisitorSMTPEmail port connectivity
mxb-00082601.gslb.pphosted.com
Port 25: Closed/unreachable - 28.2 ms - Port 465: Closed/unreachable - 21.4 ms - Port 587: Closed/unreachable - 76.4 ms -