DNS Gurus
Cached · just now
90/100 SECURITY SCORE

Detected Technologies

See all in URL Inspect 2
Gravatar logo Gravatar Let's Encrypt logo Let's Encrypt

Certificate Information

Subject
CN=web.flowmailer.net
Issuer
C=US, O=Let's Encrypt, CN=R13
Valid From
March 16, 2026
Valid Until
June 14, 2026 25 days
Public Key
RSA 2048 bit Adequate
Signature Algorithm
SHA256-RSA
SHA-256 Fingerprint
DE:D5:43:AA:53:91:F5:54:19:62:C4:9C:C6:D2:FF:85:A8:60:C6:3E:27:DE:87:CD:2A:04:A1:12:B4:A3:C7:A3
Alternative Names
1 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
Present
max-age=31536000
Content-Security-Policy
Gravatar logo
Good
default-src; style-src; img-src; +1 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
Missing
Not configured
Recommendations
  • • Increase HSTS max-age to at least 1 year and add includeSubDomains
  • • Strengthen CSP by removing 'unsafe-eval'
  • • 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
digicert.com sectigo.com entrust.net swisssign.com quovadisglobal.com letsencrypt.org identrust.com
Wildcard CAs
quovadisglobal.com
Incident Reporting
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

Subject Alternative Names

1 domain
web.flowmailer.net