Cached · just now
96/100 SECURITY SCORE

Certificate Information

Subject
CN=alertmedia.com
Issuer
C=US, O=Let's Encrypt, CN=E7
Valid From
April 30, 2026
Valid Until
July 29, 2026 77 days
Public Key
ECDSA 256 bit (P-256) Adequate
Signature Algorithm
ECDSA-SHA384
SHA-256 Fingerprint
A6:5B:BA:A6:7F:45:DA:6E:A4:BF:AB:02:E9:CA:0C:A8:5E:27:EC:E5:75:A4:EB:9F:BE:36:04:7A:D0:9C:93:8C
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=63072000; includeSubDomains; preload, max-age=63072000; includeSubDomains; preload
Content-Security-Policy
Basic
default-src; script-src; script-src-elem; +18 more Analyze
Content-Security-Policy-Report-Only
Missing
Not configured Analyze
X-Frame-Options
Good
SAMEORIGIN
X-Content-Type-Options
Good
nosniff
Referrer-Policy
Good
strict-origin-when-cross-origin
Permissions-Policy
Present
accelerometer=(), autoplay=(), camera=(); +18 more
Recommendations
  • Improve CSP by adding more specific directives and removing 'unsafe-inline'

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
  • You have authorized 7 CAs - consider limiting to only the CAs you actively use
  • Consider adding 'iodef' records to receive notifications about unauthorized certificate issuance attempts
  • Consider adding 'issuewild' records to control wildcard certificate issuance

Subject Alternative Names

1 domain