DNS Gurus

SSL Verification Bypassed

The server's SSL certificate could not be verified. The analysis was completed using insecure mode. Data may be less reliable.

Reason:

Hostname Mismatch - certificate is issued for *.facebook.com, *.facebook.net, *.fbcdn.net, *.fbsbx.com, *.m.facebook.com, *.messenger.com, *.xx.fbcdn.net, *.xy.fbcdn.net, *.xz.fbcdn.net, not for developers.c10r.facebook.com

Cached · just now
84/100 SECURITY SCORE

Detected Technologies

See all in URL Inspect 16
DigiCert logo DigiCert Facebook logo Facebook GIPHY logo GIPHY Google Analytics logo Google Analytics Google Conversion Tracking logo Google Conversion Tracking Google DoubleClick logo Google DoubleClick Google Fonts logo Google Fonts Google Search logo Google Search Google Tag Manager logo Google Tag Manager Google Translate logo Google Translate Instagram logo Instagram LinkedIn logo LinkedIn Tenor logo Tenor Trustly logo Trustly Twitter logo Twitter WhatsApp logo WhatsApp

Certificate Information

Subject
C=US, ST=California, L=Menlo Park, O=Meta Platforms, Inc., CN=*.facebook.com
Issuer
C=US, O=DigiCert Inc, CN=DigiCert Global G2 TLS RSA SHA256 2020 CA1
Valid From
January 13, 2026
Valid Until
April 13, 2026 7 days
Public Key
ECDSA 256 bit (P-256) Adequate
Signature Algorithm
SHA256-RSA
SHA-256 Fingerprint
71:D0:C7:D8:BB:8C:00:61:B9:7A:33:66:14:06:12:E0:2A:02:05:DF:67:FB:1B:89:E6:6C:C5:C0:2B:33:D3:44
Alternative Names
11 domains

Security Configuration

TLS Protocols
TLS 1.2 TLS 1.3
Forward Secrecy
Supported (Modern clients use PFS)

HTTP Security Headers

Status
Strict-Transport-Security
Present
max-age=15552000; preload
Content-Security-Policy
Google DoubleClick logo
Basic
default-src; script-src; style-src; +11 more Analyze
Content-Security-Policy-Report-Only
Missing
Not configured Analyze
X-Frame-Options
Excellent
DENY
X-Content-Type-Options
Good
nosniff
Referrer-Policy
Missing
Not configured
Permissions-Policy
Present
accelerometer=(), attribution-reporting=(), autoplay=(); +44 more
Recommendations
  • • Increase HSTS max-age to at least 1 year and add includeSubDomains
  • • Improve CSP by adding more specific directives and removing 'unsafe-inline'
  • • Add Referrer-Policy header (recommended: strict-origin-when-cross-origin)

CAA Records (Certificate Authority Authorization)

CAA Records
Not Configured (Any CA can issue certificates)
CAA Issues
  • • No CAA records configured - any CA can issue certificates
Recommendations
  • • Implement CAA records to restrict which CAs can issue certificates for your domain
  • • This adds an extra layer of security against unauthorized certificate issuance
  • • Example: Add CAA record 'example.com. CAA 0 issue "letsencrypt.org"'
  • • Consider adding 'iodef' record to receive security incident reports