DNS Gurus
Cached · just now
98/100 SECURITY SCORE

Certificate Information

Subject
CN=support.simpleintranet.org
Issuer
C=US, O=Let's Encrypt, CN=R13
Valid From
January 30, 2026
Valid Until
April 30, 2026 88 days
Public Key
RSA 2048 bit Adequate
Signature Algorithm
SHA256-RSA
SHA-256 Fingerprint
E8:E5:76:59:EE:58:13:C2:7A:F5:A9:71:D7:62:72:6E:83:83:72:86:D0:E5:CE:D9:BC:73:C6:2D:A9:77:76:E1
Alternative Names
57 domains

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=63072000;includeSubDomains
Content-Security-Policy
Strong
default-src; script-src; style-src; +6 more
X-Frame-Options
Good
SAMEORIGIN
X-Content-Type-Options
Good
nosniff
Referrer-Policy
Good
strict-origin-when-cross-origin
Permissions-Policy
Present
accelerometer=(), ambient-light-sensor=(), bluetooth=(), compute-pressure=(), document-domain=(), encrypted-media=(), gamepad=(), gyroscope=(), hid=(), magnetometer=(), midi=(), screen-wake-lock=(), serial=(), speaker-selection=(), usb=(), xr-spatial-tracking=()
Recommendations
  • • Consider adding 'preload' to HSTS for maximum security

CAA Records (Certificate Authority Authorization)

CAA Records
Configured (Restricts certificate issuance)
Current Issuer
Authorized (Matches CAA policy)
Authorized CAs
letsencrypt.org sectigo.com amazon.com digicert.com
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