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SECURITY SCORE
Detected Technologies
Certificate Information
Subject
CN=estanford.com
Issuer
C=US, O=Let's Encrypt, CN=R12
Valid From
February 19, 2026
Valid Until
May 20, 2026
88 days
Public Key
RSA
4096 bit
Strong
Signature Algorithm
SHA256-RSA
SHA-256 Fingerprint
45:3F:C7:4A:0A:28:08:C3:EF:F7:5D:06:29:43:A7:0C:0E:53:C4:DA:79:CA:4D:AE:42:9A:AC:71:0E:09:8E:20
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
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
88 domains
tsuyukusa.com
*.tsuyukusa.com
*.access.tsuyukusa.com
*.admin.tsuyukusa.com
*.api.tsuyukusa.com
*.app.tsuyukusa.com
*.apps.tsuyukusa.com
*.assets.tsuyukusa.com
*.connect.tsuyukusa.com
*.dashboard.tsuyukusa.com
*.demo.tsuyukusa.com
*.desktop.tsuyukusa.com
*.dev.tsuyukusa.com
*.gateway.tsuyukusa.com
*.gp.tsuyukusa.com
*.hostmaster.tsuyukusa.com
*.m.tsuyukusa.com
*.mail.tsuyukusa.com
*.mailer.tsuyukusa.com
*.portal.tsuyukusa.com
*.qa.tsuyukusa.com
*.rd.tsuyukusa.com
*.rdp.tsuyukusa.com
*.rds.tsuyukusa.com
*.rdweb.tsuyukusa.com
*.secure.tsuyukusa.com
*.sitemap.tsuyukusa.com
*.sitemaps.tsuyukusa.com
*.sslvpn.tsuyukusa.com
*.staging.tsuyukusa.com
*.stg.tsuyukusa.com
*.uat.tsuyukusa.com
*.v1.tsuyukusa.com
*.v2.tsuyukusa.com
*.vdi.tsuyukusa.com
*.vpn.tsuyukusa.com
*.vpn1.tsuyukusa.com
*.vpn2.tsuyukusa.com
*.web.tsuyukusa.com
*.webvpn.tsuyukusa.com
*.ww1.tsuyukusa.com
*.ww16.tsuyukusa.com
*.ww25.tsuyukusa.com
*.ww38.tsuyukusa.com
ajaibbangat368.org
*.ajaibbangat368.org
*.api.ajaibbangat368.org
*.app.ajaibbangat368.org
*.assets.ajaibbangat368.org
*.dev.ajaibbangat368.org
*.gkboqapp.ajaibbangat368.org
*.hostmaster.ajaibbangat368.org
*.members.ajaibbangat368.org
*.new.ajaibbangat368.org
*.staging.ajaibbangat368.org
*.test.ajaibbangat368.org
*.wacisapp.ajaibbangat368.org
*.www.ajaibbangat368.org
bouldermobile.com
*.bouldermobile.com
*.wiki.bouldermobile.com
*.ww16.bouldermobile.com
*.ww25.bouldermobile.com
*.ww5.bouldermobile.com
*.admin.davis.best
*.andm.davis.best
*.api.davis.best
*.app.davis.best
*.backup.davis.best
*.cottle.davis.best
*.dan.davis.best
*.dashboard.davis.best
davis.best
*.davis.best
*.daxnjadmin.davis.best
*.dev.davis.best
*.extranet.davis.best
*.hostmaster.davis.best
*.m.davis.best
*.mail.davis.best
*.shop.davis.best
*.site.davis.best
*.staging.davis.best
*.test.davis.best
*.www.davis.best
estanford.com
*.estanford.com
*.ww16.estanford.com
Other domains in certificate