Open
Cached
·
just now
89/100
SECURITY SCORE
Certificate Information
Subject
CN=spelldata.co.jp
Issuer
C=US, O=Google Trust Services, CN=WE1
Valid From
January 10, 2026
Valid Until
April 10, 2026
74 days
Public Key
ECDSA
256 bit
(P-256)
Adequate
Signature Algorithm
ECDSA-SHA256
SHA-256 Fingerprint
E8:E6:DF:76:7F:04:04:3C:13:D0:A1:66:B7:51:9C:99:C5:39:DD:FC:0B:D7:6E:CD:24:F1:17:89:23:93:2F:19
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=15552000; includeSubDomains; preload
Content-Security-Policy
Strong
default-src; base-uri; script-src; +11 more
default-src 'none';base-uri 'self';script-src 'self' https://matomo.spelldata.co.jp https://www.googletagmanager.com https://www.clarity.ms https://*.clarity.ms;style-src 'self' https://tayori.com;style-src-elem 'self' https://tayori.com;img-src 'self' data: https://stats.g.doubleclick.net https://www.linkedin.com https://px.ads.linkedin.com https://t.co https://www.facebook.com https://www.google.com https://www.google.co.jp https://www.google-analytics.com https://matomo.spelldata.co.jp https://*.clarity.ms https://*.bing.com https://*.ytimg.com https://ct.pinterest.com https://tr.lfeeder.com https://tr-rc.lfeeder.com https://www.googletagmanager.com;connect-src 'self' https://matomo.spelldata.co.jp https://analytics.google.com https://www.google.co.jp https://www.google-analytics.com https://api.websitecarbon.com https://stats.g.doubleclick.net https://ct.pinterest.com https://*.clarity.ms https://td.doubleclick.net;object-src 'none';frame-src 'self' https://www.youtube.com https://tayori.com https://www.youtube-nocookie.com https://platform.twitter.com https://ct.pinterest.com https://td.doubleclick.net;form-action 'self' https://tayori.com https://cse.google.com;frame-ancestors 'none';media-src 'self';upgrade-insecure-requests;report-to csp-endpoint;
X-Frame-Options
Missing
Not configured
X-Content-Type-Options
Good
nosniff
Referrer-Policy
Present
no-referrer, strict-origin-when-cross-origin
Permissions-Policy
Missing
Not configured
Recommendations
- • Increase HSTS max-age to at least 1 year and add includeSubDomains
- • Add X-Frame-Options: DENY or SAMEORIGIN to prevent clickjacking
- • 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