DNS Gurus
Cached · just now
95/100 SECURITY SCORE

Certificate Information

Subject
CN=shireburn.com
Issuer
C=US, O=Let's Encrypt, CN=R13
Valid From
December 22, 2025
Valid Until
March 22, 2026 54 days
Public Key
RSA 2048 bit Adequate
Signature Algorithm
SHA256-RSA
SHA-256 Fingerprint
F6:5A:C2:AF:44:46:03:06:B0:2A:D0:DF:F4:3F:95:92:E5:D2:8D:E5:39:5A:24:44:7A:38:DA:11:0E:5F:7C:8F
Alternative Names
2 domains

Security Configuration

TLS Protocols
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
Good
strict-origin-when-cross-origin
Permissions-Policy
Present
geolocation=(), microphone=(), camera=(), payment=(), usb=(), vr=(), gyroscope=(), magnetometer=(), fullscreen=(self)
Recommendations
  • • Significantly strengthen CSP directives

CAA Records (Certificate Authority Authorization)

CAA Records
Configured (Restricts certificate issuance)
Current Issuer
Authorized (Matches CAA policy)
Authorized CAs
godaddy.com letsencrypt.org
Wildcard CAs
letsencrypt.org godaddy.com
Incident Reporting
Recommendations
  • • Consider using critical flag (flags=128) for stricter CAA enforcement

Subject Alternative Names

2 domains
shireburn.com www.shireburn.com