Open
Cached
·
just now
98/100
SECURITY SCORE
Detected Technologies
Certificate Information
Subject
CN=status.prelim.com
Issuer
C=US, O=Let's Encrypt, CN=R13
Valid From
April 28, 2026
Valid Until
July 27, 2026
88 days
Public Key
RSA
2048 bit
Adequate
Signature Algorithm
SHA256-RSA
SHA-256 Fingerprint
DD:51:D4:E1:DC:28:59:AA:A3:0F:FA:75:20:D5:71:7F:2D:DA:7A:18:59:90:F7:BA:26:9B:E2:3A:63:BF:82:F7
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=63072000; includeSubDomains; preload
X-Frame-Options
Good
SAMEORIGIN
X-Content-Type-Options
Good
nosniff
Referrer-Policy
Good
no-referrer
Permissions-Policy
Present
clipboard-write=(self), camera=(), microphone=(); +4 more
Recommendations
- • Strengthen CSP by removing 'unsafe-eval'
CAA Records (Certificate Authority Authorization)
CAA Records
Configured
(Restricts certificate issuance)
Current Issuer
Authorized
(Matches CAA policy)
Authorized CAs
Recommendations
- • Consider using critical flag (flags=128) for stricter CAA enforcement
- • You have authorized 4 CAs - consider limiting to only the CAs you actively use
- • Consider adding 'iodef' records to receive notifications about unauthorized certificate issuance attempts
- • Consider adding 'issuewild' records to control wildcard certificate issuance