Open
Cached
·
just now
77/100
SECURITY SCORE
Certificate Information
Subject
CN=blog.ohmygod.jp
Issuer
C=US, O=Google Trust Services, CN=WR3
Valid From
October 01, 2025
Valid Until
December 30, 2025
46 days
Public Key
RSA
2048 bit
Adequate
Signature Algorithm
SHA256-RSA
SHA-256 Fingerprint
CD:C0:91:2E:FD:F0:28:9C:6F:C7:D9:F4:90:1C:01:0D:EA:36:2F:C4:7D:B1:C6:D5:C8:10:ED:35:95:89:1A:73
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
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
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
100 domains
leohofer.dev
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app.nativetasks.com
vendor-michael.nucor.report
blog.ohmygod.jp
www.onrecord.online
pathly.careers
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theseopodcast.net
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auth.titledock.com
portals.tracker-apps.com
www.tunaleondelosaldama.com
navi.urbanhome.app
uvifyprints.com
playgo.vonder.io
www.yureto.com
Other domains in certificate