DNS Gurus
Cached · just now
80/100 SECURITY SCORE

Certificate Information

Subject
CN=flowco.com.br
Issuer
C=US, O=Google Trust Services, CN=WE1
Valid From
January 12, 2026
Valid Until
April 12, 2026 85 days
Public Key
ECDSA 256 bit (P-256) Adequate
Signature Algorithm
ECDSA-SHA256
SHA-256 Fingerprint
5E:2A:91:F6:54:C7:D3:F2:1E:75:B0:31:D1:DE:B7:92:C4:D8:C7:9D:89:FE:AC:24:BA:D9:47:60:AB:B7:C7:40
Alternative Names
2 domains

Security Configuration

TLS Protocols
TLS 1.0 TLS 1.1 TLS 1.2 TLS 1.3
Forward Secrecy
Supported (Modern clients use PFS)
Warnings
  • • TLS 1.1 is deprecated and should be disabled
  • • TLS 1.0 is deprecated and should be disabled

HTTP Security Headers

Status
Strict-Transport-Security
Present
max-age=31556926
Content-Security-Policy
Missing
Not configured
X-Frame-Options
Missing
Not configured
X-Content-Type-Options
Missing
Not configured
Referrer-Policy
Missing
Not configured
Permissions-Policy
Missing
Not configured
Recommendations
  • • Increase HSTS max-age to at least 1 year and add includeSubDomains
  • • Add Content-Security-Policy header to prevent XSS attacks
  • • Add X-Frame-Options: DENY or SAMEORIGIN to prevent clickjacking
  • • Add X-Content-Type-Options: nosniff
  • • 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 pki.goog ; cansignhttpexchanges=yes sectigo.com ssl.com comodoca.com digicert.com ; cansignhttpexchanges=yes globalsign.com
Wildcard CAs
comodoca.com digicert.com ; cansignhttpexchanges=yes globalsign.com letsencrypt.org pki.goog ; cansignhttpexchanges=yes sectigo.com ssl.com
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

Subject Alternative Names

2 domains
flowco.com.br *.flowco.com.br