DNS Gurus
Cached · just now
87/100 SECURITY SCORE

Certificate Information

Subject
CN=www.pwc.co.uk
Issuer
C=US, O=Let's Encrypt, CN=R13
Valid From
December 11, 2025
Valid Until
March 11, 2026 75 days
Public Key
RSA 2048 bit Adequate
Signature Algorithm
SHA256-RSA
SHA-256 Fingerprint
CF:44:E1:96:5D:65:26:BD:78:F1:08:F1:4E:5E:6D:38:37:4E:5B:BB:A1:B8:D5:B0:DC:D2:89:73:1B:F4:85:B0
Alternative Names
52 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
Excellent
max-age=31536000 ; includeSubDomains ; preload
Content-Security-Policy
Weak
frame-ancestors
X-Frame-Options
Good
SAMEORIGIN
X-Content-Type-Options
Good
nosniff
Referrer-Policy
Missing
Not configured
Permissions-Policy
Missing
Not configured
Recommendations
  • • Significantly strengthen CSP directives
  • • 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
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