Open
Cached
·
just now
93/100
SECURITY SCORE
Detected Technologies
Certificate Information
Subject
CN=dmarcadvisor.com
Issuer
C=US, O=Let's Encrypt, CN=R12
Valid From
March 30, 2026
Valid Until
June 28, 2026
57 days
Public Key
RSA
4096 bit
Strong
Signature Algorithm
SHA256-RSA
SHA-256 Fingerprint
BB:69:2C:32:D5:6D:FA:3D:02:3E:70:5D:34:D5:CA:BB:D2:F8:9C:A1:C1:D4:E6:A0:0A:C7:E2:B5:76:92:28:6C
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
Good
max-age=31536000; includeSubDomains
X-Frame-Options
Good
SAMEORIGIN
X-Content-Type-Options
Good
nosniff
Referrer-Policy
Good
strict-origin
Permissions-Policy
Present
camera=(), geolocation=(), microphone=()
Recommendations
- • Consider adding 'preload' to HSTS for maximum security
- • Add Content-Security-Policy header to prevent XSS attacks
CAA Records (Certificate Authority Authorization)
CAA Records
Configured
(Restricts certificate issuance)
Current Issuer
Authorized
(Matches CAA policy)
Authorized CAs
Wildcard CAs
Recommendations
- • Consider using critical flag (flags=128) for stricter CAA enforcement
- • Consider adding 'iodef' records to receive notifications about unauthorized certificate issuance attempts