Open
Cached
·
just now
92/100
SECURITY SCORE
Certificate Information
Subject
CN=*.telegramd.com
Issuer
C=US, O=Let's Encrypt, CN=R13
Valid From
December 15, 2025
Valid Until
March 15, 2026
67 days
Public Key
RSA
2048 bit
Adequate
Signature Algorithm
SHA256-RSA
SHA-256 Fingerprint
F7:D5:BF:60:10:A4:5F:23:2D:F4:C7:09:98:2B:18:4C:1E:C1:2A:87:BC:28:4A:CF:78:57:5C:C9:84:9D:D9:4A
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
Excellent
max-age=31536000; includeSubDomains; preload
Content-Security-Policy
Basic
default-src; script-src; style-src; +6 more
default-src 'self'; script-src 'self' 'unsafe-inline' 'unsafe-eval' https://www.googletagmanager.com https://www.google.com/recaptcha/ https://www.gstatic.com https://googleads.g.doubleclick.net https://telegra.containers.piwik.pro https://assets.mailerlite.com https://connect.facebook.net https://www.facebook.com https://static.klaviyo.com https://static-tracking.klaviyo.com; style-src 'self' 'unsafe-inline' https://fonts.googleapis.com https://assets.mailerlite.com; font-src 'self' https://fonts.gstatic.com data:; img-src 'self' data: https://secure.gravatar.com https://www.google.com https://googleads.g.doubleclick.net https://www.google.co.in https://www.facebook.com; connect-src 'self' https://www.google-analytics.com https://www.googleapis.com https://analyticsreporting.googleapis.com https://www.google.com/recaptcha/ https://www.google.com https://googleads.g.doubleclick.net https://telegra.containers.piwik.pro https://telegra.piwik.pro https://www.facebook.com https://a.klaviyo.com; frame-src 'self' https://www.google.com/recaptcha/ https://www.googletagmanager.com; worker-src 'self' blob:; media-src 'self' https://telegramd.com;
X-Frame-Options
Good
SAMEORIGIN
X-Content-Type-Options
Good
nosniff
Referrer-Policy
Good
no-referrer-when-downgrade
Permissions-Policy
Missing
Not configured
Recommendations
- • Improve CSP by adding more specific directives and removing 'unsafe-inline'
- • 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