DNS Gurus
Cached · just now
91/100 SECURITY SCORE

Certificate Information

Subject
C=US, ST=Massachusetts, L=Framingham, O=Staples, Inc., CN=www.staples.com
Issuer
C=US, O=DigiCert Inc, CN=DigiCert Global G2 TLS RSA SHA256 2020 CA1
Valid From
September 03, 2025
Valid Until
October 04, 2026 252 days
Public Key
RSA 2048 bit Adequate
Signature Algorithm
SHA256-RSA
SHA-256 Fingerprint
33:5D:A3:3F:1C:94:F6:2B:1A:B1:AB:9C:32:BB:3E:43:2B:8A:6B:23:C9:A9:5D:9E:96:D4:86:2B:C0:66:F9:46
Alternative Names
27 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=31536000; includeSubDomains
Content-Security-Policy
Basic
default-src; media-src; img-src; +2 more
X-Frame-Options
Good
SAMEORIGIN
X-Content-Type-Options
Good
nosniff
Referrer-Policy
Missing
Not configured
Permissions-Policy
Missing
Not configured
Recommendations
  • • Consider adding 'preload' to HSTS for maximum security
  • • 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
Authorized (Matches CAA policy)
Authorized CAs
letsencrypt.org digicert.com
Incident Reporting
Recommendations
  • • Consider using critical flag (flags=128) for stricter CAA enforcement
  • • Consider adding 'issuewild' records to control wildcard certificate issuance