DNS Gurus
Cached · just now
76/100 SECURITY SCORE

Detected Technologies

See all in URL Inspect 1
Let's Encrypt logo Let's Encrypt

Certificate Information

Subject
CN=sumibi.com
Issuer
C=US, O=Let's Encrypt, CN=R12
Valid From
February 19, 2026
Valid Until
May 20, 2026 87 days
Public Key
RSA 4096 bit Strong
Signature Algorithm
SHA256-RSA
SHA-256 Fingerprint
52:D1:98:8D:3D:36:15:3C:E5:E5:35:3D:2A:B3:A3:E3:C5:AF:FC:F2:11:B2:7E:3E:CC:17:00:FC:EA:2B:BB:1D
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 Analyze
Content-Security-Policy-Report-Only
Missing
Not configured Analyze
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
dalthorp.com *.dalthorp.com *.admin.dalthorp.com *.api.dalthorp.com *.app.dalthorp.com *.backend.dalthorp.com *.blog.dalthorp.com *.dashboard.dalthorp.com *.demo.dalthorp.com *.dev.dalthorp.com *.emv1.dalthorp.com *.m.dalthorp.com *.members.dalthorp.com *.news.dalthorp.com *.shop.dalthorp.com *.sitemap.dalthorp.com *.sitemaps.dalthorp.com *.staging.dalthorp.com *.test.dalthorp.com *.testing.dalthorp.com *.ww16.dalthorp.com *.ww25.dalthorp.com *.www.dalthorp.com

Other domains in certificate

bygraves.com *.bygraves.com *.sitemap.bygraves.com *.wiki.bygraves.com *.ww16.bygraves.com
*.backup.mipsicologa.com *.beta.mipsicologa.com *.blog.mipsicologa.com *.crm.mipsicologa.com *.demo.mipsicologa.com *.ebay.mipsicologa.com *.forums.mipsicologa.com *.help.mipsicologa.com mipsicologa.com *.mipsicologa.com *.spam.mipsicologa.com *.stores.mipsicologa.com *.ww1.mipsicologa.com *.ww25.mipsicologa.com
*.api.richardbaker.com *.dev.richardbaker.com *.hostmaster.richardbaker.com *.mail.richardbaker.com richardbaker.com *.richardbaker.com *.sitemaps.richardbaker.com *.ww17.richardbaker.com *.ww38.richardbaker.com *.www.richardbaker.com
*.admin.stolwijk.com *.app.stolwijk.com *.crm.stolwijk.com *.customers.stolwijk.com *.dashboard.stolwijk.com *.gp.stolwijk.com *.help.stolwijk.com *.hostmaster.stolwijk.com *.imap.stolwijk.com *.leads.stolwijk.com *.portal.stolwijk.com *.remote.stolwijk.com *.rustore.stolwijk.com *.sales.stolwijk.com *.sitemap.stolwijk.com *.sslvpn.stolwijk.com stolwijk.com *.stolwijk.com *.support.stolwijk.com *.vpn.stolwijk.com *.ww11.stolwijk.com *.ww16.stolwijk.com *.ww25.stolwijk.com *.ww38.stolwijk.com *.www.stolwijk.com
*.api.sumibi.com *.cameras.sumibi.com *.dev.sumibi.com *.ebay.sumibi.com *.hostmaster.sumibi.com *.mail.sumibi.com *.mathproject.sumibi.com sumibi.com *.sumibi.com *.test.sumibi.com *.ww1.sumibi.com *.ww16.sumibi.com *.ww25.sumibi.com