89/100 SECURITY SCORE

Certificate Information

Subject
CN=learn.howlingamplify.com
Issuer
C=US, O=Let's Encrypt, CN=R13
Valid From
January 10, 2026
Valid Until
April 10, 2026 71 days
Public Key
RSA 2048 bit Adequate
Signature Algorithm
SHA256-RSA
SHA-256 Fingerprint
EF:48:19:1D:CF:35:D7:1B:55:FA:81:8F:82:1F:D8:E2:A6:2B:D7:C0:94:CE:A7:BB:6D:0D:25:B2:7C:C1:73:A4
Alternative Names

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=64072000; includeSubDomains; preload
Content-Security-Policy
Missing
Not configured
X-Frame-Options
Excellent
DENY
X-Content-Type-Options
Good
nosniff
Referrer-Policy
Missing
Not configured
Permissions-Policy
Missing
Not configured
Recommendations
  • Add Content-Security-Policy header to prevent XSS attacks
  • 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)
Recommendations
  • Consider using critical flag (flags=128) for stricter CAA enforcement
  • Consider adding 'iodef' records to receive notifications about unauthorized certificate issuance attempts
  • Consider adding 'issuewild' records to control wildcard certificate issuance

Subject Alternative Names

89 domains
learning.13layers.com

Other domains in certificate

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learn.access-innovation.com
kb.accuservepayroll.com
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knowledgebase.cypress.bc.ca
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