DNS Gurus
Cached · just now
76/100 SECURITY SCORE

Certificate Information

Subject
CN=shoumei.com
Issuer
C=US, O=Let's Encrypt, CN=R13
Valid From
December 21, 2025
Valid Until
March 21, 2026 57 days
Public Key
RSA 4096 bit Strong
Signature Algorithm
SHA256-RSA
SHA-256 Fingerprint
9B:35:3F:7F:72:D2:73:EA:98:52:DC:02:D1:1B:45:3D:6F:22:64:E0:9F:AB:E3:01:89:82:C7:5B:C6:F3:D7:3E
Alternative Names
90 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
Missing
Not configured
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
  • • Add Strict-Transport-Security header with max-age of at least 1 year
  • • 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
Not Configured (Any CA can issue certificates)
CAA Issues
  • • No CAA records configured - any CA can issue certificates
Recommendations
  • • Implement CAA records to restrict which CAs can issue certificates for your domain
  • • This adds an extra layer of security against unauthorized certificate issuance
  • • Example: Add CAA record 'example.com. CAA 0 issue "letsencrypt.org"'
  • • Consider adding 'iodef' record to receive security incident reports

Subject Alternative Names

90 domains
slcflowers.com *.slcflowers.com *.9f7b2efe-86d5-46b4-9bbd-e3dd964705f4.slcflowers.com *.admin.slcflowers.com *.blog.slcflowers.com *.cp.slcflowers.com *.dev.slcflowers.com *.edge.slcflowers.com *.hr.slcflowers.com *.info.slcflowers.com *.joomla.slcflowers.com *.love.slcflowers.com *.media.slcflowers.com *.net.slcflowers.com *.nwvbnydqek.slcflowers.com *.portfolio.slcflowers.com *.rz.slcflowers.com *.sms.slcflowers.com *.users.slcflowers.com *.xxx.slcflowers.com

Other domains in certificate

*.16.bestpanels.com bestpanels.com *.bestpanels.com *.blog.bestpanels.com *.community.bestpanels.com *.eu.bestpanels.com *.extranet.bestpanels.com *.mm.bestpanels.com *.online.bestpanels.com *.p.bestpanels.com *.rz.bestpanels.com *.users.bestpanels.com *.ww16.bestpanels.com *.ww25.bestpanels.com *.ww38.bestpanels.com
*.acc.checkmytires.com *.app.checkmytires.com checkmytires.com *.checkmytires.com *.es.checkmytires.com *.extranet.checkmytires.com *.green.checkmytires.com *.nsk.checkmytires.com *.sms.checkmytires.com *.ww1.checkmytires.com *.ww16.checkmytires.com *.ww25.checkmytires.com *.ww38.checkmytires.com
*.blog.resinger.com *.cp.resinger.com *.ftp.resinger.com *.gis.resinger.com resinger.com *.resinger.com *.ufa.resinger.com *.users.resinger.com *.videocdn.resinger.com
*.123.shoumei.com *.comune.shoumei.com *.demo2.shoumei.com *.gold.shoumei.com *.learn.shoumei.com *.mail.shoumei.com *.media.shoumei.com *.mobile.shoumei.com *.no.shoumei.com *.ns2.shoumei.com *.online.shoumei.com *.origin.shoumei.com shoumei.com *.shoumei.com *.sms.shoumei.com *.ww1.shoumei.com *.ww38.shoumei.com *.xxx.shoumei.com
*.rustore.vertriebs.com vertriebs.com *.vertriebs.com *.vpn.vertriebs.com *.www.vertriebs.com
*.123.youhistory.com *.acc.youhistory.com *.comune.youhistory.com *.images.youhistory.com *.mail.youhistory.com *.search.youhistory.com *.travel.youhistory.com *.ww25.youhistory.com youhistory.com *.youhistory.com