Cached · just now
76/100 SECURITY SCORE

Certificate Information

Subject
CN=esto.studio
Issuer
C=US, O=Let's Encrypt, CN=R13
Valid From
January 02, 2026
Valid Until
April 02, 2026 52 days
Public Key
RSA 4096 bit Strong
Signature Algorithm
SHA256-RSA
SHA-256 Fingerprint
81:63:C8:2A:15:BE:02:13:86:85:B5:42:51:D0:5A:BB:F8:94:99:FC:47:7F:16:76:16:D2:0D:C6:CB:CE:FE:49
Alternative Names

Security Configuration

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

HTTP Security Headers

Status
Strict-Transport-Security
Missing
Not configured
Content-Security-Policy
Missing
Not configured
X-Frame-Options
Missing
Not configured
X-Content-Type-Options
Missing
Not configured
Referrer-Policy
Missing
Not configured
Permissions-Policy
Missing
Not configured
Recommendations
  • Add Strict-Transport-Security header with max-age of at least 1 year
  • Add Content-Security-Policy header to prevent XSS attacks
  • Add X-Frame-Options: DENY or SAMEORIGIN to prevent clickjacking
  • Add X-Content-Type-Options: nosniff
  • Add Referrer-Policy header (recommended: strict-origin-when-cross-origin)
  • Consider adding Permissions-Policy to control browser features

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

Subject Alternative Names

90 domains
fluttersmashers.co *.fluttersmashers.co

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charley.au *.charley.au *.random.charley.au *.ww16.charley.au *.ww38.charley.au
optimised.co.in *.optimised.co.in *.random.optimised.co.in
esto.studio *.esto.studio
favaris.net *.favaris.net *.ua.favaris.net
fleximediatv.co *.fleximediatv.co
formulaire-assures-sante.com *.formulaire-assures-sante.com
*.ankh.gamingsports.site gamingsports.site *.gamingsports.site
genshin-akk.store *.genshin-akk.store *.sitemap.genshin-akk.store
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*.c.p-c.no p-c.no *.p-c.no *.p.p-c.no *.ww38.p-c.no
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qy.net.au *.qy.net.au
redcrosblood.org *.redcrosblood.org
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