DNS Gurus
Open Cached · just now
92/100 SECURITY SCORE

Certificate Information

Subject
CN=support.marcadvisory.ca
Issuer
C=US, O=Let's Encrypt, CN=R13
Valid From
November 24, 2025
Valid Until
February 22, 2026 89 days
Public Key
RSA 2048 bit Adequate
Signature Algorithm
SHA256-RSA
SHA-256 Fingerprint
6E:60:08:A1:32:3B:23:4F:FE:64:6F:A8:0A:F8:72:86:25:9B:8B:50:2F:4D:4A:96:7F:93:9E:58:E7:1A:D3:D4
Alternative Names
36 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
Basic
script-src; object-src; base-uri; +1 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
  • • Improve CSP by adding more specific directives and removing 'unsafe-inline'

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