Open
Cached
·
just now
92/100
SECURITY SCORE
Detected Technologies
Certificate Information
Subject
CN=callclosed.net
Issuer
C=US, O=Let's Encrypt, CN=YR1
Valid From
June 16, 2026
Valid Until
September 14, 2026
45 days
Public Key
RSA
2048 bit
Adequate
Signature Algorithm
SHA256-RSA
SHA-256 Fingerprint
C7:E0:8D:1D:41:38:D6:CA:55:97:8C:C8:12:1B:8B:45:CE:7F:6C:49:59:35:76:5F:02:D0:7D:7A:8F:27:69:E5
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
Present
max-age=63072000; includeSubdomains;
X-Frame-Options
Good
sameorigin
X-Content-Type-Options
Good
nosniff
Referrer-Policy
Good
no-referrer-when-downgrade
Permissions-Policy
Present
accelerometer=(), ambient-light-sensor=(), autoplay=(); +24 more
Recommendations
- • Increase HSTS max-age to at least 1 year and add includeSubDomains
- • Strengthen CSP by removing 'unsafe-eval'
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