Open
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just now
77/100
SECURITY SCORE
Certificate Information
Subject
CN=www.geurmelder.nl
Issuer
C=US, O=Google Trust Services, CN=WR3
Valid From
October 06, 2025
Valid Until
January 04, 2026
44 days
Public Key
RSA
2048 bit
Adequate
Signature Algorithm
SHA256-RSA
SHA-256 Fingerprint
A4:64:0B:6F:84:14:49:D4:71:3C:95:40:76:4B:CC:16:0A:A6:48:E4:73:B4:46:E1:05:6A:B5:3B:F8:7C:92:F2
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
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app.docuverse.io
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ehradm.com
www.express3d.co.nz
teamassistance.fairdrive.app
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learning.freedomfromdiabetes.org
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gamermobiles.com
www.geurmelder.nl
www.glimm.art
sw.cberi.go.kr
gobukit.com
www.hacking.bio
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app.hermanpro.com
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app.iform.dk
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weather.joineconomy.com
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admin.juggle.jp
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dev-portal.palabra.de
portal.palabra.de
www.playrafiki.co.uk
www.practicepermanent.app
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programing-server.de
www.psicologocristianooliveira.com.br
q-app.me
link.redpocket.gg
refricar.shop
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m.shambhala-transition.org
send.sms.direct
aforrville.sphure.app
stainedglassbuyer.co.uk
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tanquestsolutions.com
ops.test.tcat.app
crypto.tidalforce.org
www.tqualitywholesale.org
deeplink.uattc.travelcard.nl
www.vcvendeu.com.br
dashboard.atm.velocityps.com.au
tms-payment.vntrip.vn
www.bills.vuyap.com
willotty.com
dev.womm.us
zaroug.ca
Other domains in certificate