Open
Cached
·
just now
98/100
SECURITY SCORE
Certificate Information
Subject
CN=duncm.com
Issuer
C=US, O=Google Trust Services, CN=WE1
Valid From
October 06, 2025
Valid Until
January 04, 2026
43 days
Public Key
ECDSA
256 bit
(P-256)
Adequate
Signature Algorithm
ECDSA-SHA256
SHA-256 Fingerprint
65:6B:3F:EF:57:22:F4:4F:C1:4A:4E:61:C2:BD:16:6C:73:A4:5D:8B:22:F4:D0:56:65:C1:BF:D1:1A:68:AF:40
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
Content-Security-Policy
Good
default-src; base-uri; form-action; +4 more
default-src 'none'; base-uri 'none'; form-action 'none'; frame-ancestors 'none'; img-src 'self'; style-src 'self' fonts.googleapis.com; font-src data: fonts.gstatic.com
X-Frame-Options
Excellent
DENY
X-Content-Type-Options
Good
nosniff
Referrer-Policy
Good
no-referrer
Permissions-Policy
Present
camera=(), display-capture=(), geolocation=(), microphone=()
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
digicert.com
; cansignhttpexchanges=yes
letsencrypt.org
pki.goog
; cansignhttpexchanges=yes
ssl.com
comodoca.com
Wildcard CAs
comodoca.com
digicert.com
; cansignhttpexchanges=yes
letsencrypt.org
pki.goog
; cansignhttpexchanges=yes
ssl.com
Recommendations
- • Consider using critical flag (flags=128) for stricter CAA enforcement
- • You have authorized 5 CAs - consider limiting to only the CAs you actively use
- • Consider adding 'iodef' records to receive notifications about unauthorized certificate issuance attempts