Open
Cached
·
just now
90/100
SECURITY SCORE
Detected Technologies
Certificate Information
Subject
CN=support.nmbrs.nl
Issuer
C=US, O=Let's Encrypt, CN=R13
Valid From
April 13, 2026
Valid Until
July 12, 2026
69 days
Public Key
RSA
4096 bit
Strong
Signature Algorithm
SHA256-RSA
SHA-256 Fingerprint
96:40:C8:FB:F5:46:7B:C4:9A:2C:1A:A5:32:DC:57:36:19:02:C4:2D:23:76:8A:B2:5A:51:84:9D:DC:5B:13:E8
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
Good
SAMEORIGIN
X-Content-Type-Options
Good
nosniff
Referrer-Policy
Present
same-origin
Permissions-Policy
Present
accelerometer=(), browsing-topics=(), camera=(); +15 more
Recommendations
- • Add Strict-Transport-Security header with max-age of at least 1 year
- • Improve CSP by adding more specific directives and removing 'unsafe-inline'
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