DNS Gurus
Cached · just now
85/100 SECURITY SCORE

Certificate Information

Subject
C=US, ST=WA, L=Redmond, O=Microsoft Corporation, CN=*.msn.ca
Issuer
C=US, O=Microsoft Corporation, CN=Microsoft Azure RSA TLS Issuing CA 03
Valid From
November 18, 2025
Valid Until
May 17, 2026 107 days
Public Key
RSA 2048 bit Adequate
Signature Algorithm
SHA384-RSA
SHA-256 Fingerprint
70:CD:F8:1B:7E:0E:D9:97:90:03:C4:5B:1B:3C:8C:67:7B:9B:93:F1:FA:95:13:A5:EE:23:8C:49:12:DC:0D:C7
Alternative Names
31 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
Present
max-age=1209600; includeSubDomains; preload
Content-Security-Policy
Basic
block-all-mixed-content; connect-src; default-src; +5 more
X-Frame-Options
Good
sameorigin
X-Content-Type-Options
Good
nosniff
Referrer-Policy
Missing
Not configured
Permissions-Policy
Missing
Not configured
Recommendations
  • • Increase HSTS max-age to at least 1 year and add includeSubDomains
  • • Improve CSP by adding more specific directives and removing 'unsafe-inline'
  • • Add Referrer-Policy header (recommended: strict-origin-when-cross-origin)
  • • Consider adding Permissions-Policy to control browser features

CAA Records (Certificate Authority Authorization)

CAA Records
Configured (Restricts certificate issuance)
Current Issuer
Not Authorized (Potential misconfiguration)
CAA Issues
  • • CRITICAL: Current certificate issuer 'C=US, O=Microsoft Corporation, CN=Microsoft Azure RSA TLS Issuing CA 03' is NOT authorized by CAA records. Authorized CAs:
Recommendations
  • • Consider using critical flag (flags=128) for stricter CAA enforcement
  • • Consider adding 'iodef' records to receive notifications about unauthorized certificate issuance attempts