Open
Cached
·
just now
85/100
SECURITY SCORE
Certificate Information
Subject
C=DE, ST=Rheinland-Pfalz, L=Montabaur, O=1&1 Mail & Media GmbH, CN=*.netid.de
Issuer
C=DE, O=Deutsche Telekom Security GmbH, CN=Telekom Security ServerID OV Class 2 CA
Valid From
October 14, 2025
Valid Until
October 18, 2026
77 days
Public Key
RSA
3072 bit
Adequate
Signature Algorithm
SHA256-RSA
SHA-256 Fingerprint
B6:B1:E3:9F:FA:FB:0F:87:34:BC:4C:2E:71:7C:27:FB:90:F6:5E:9D:25:6D:85:B2:00:74:5B:3D:22:ED:CD:E0
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
Good
max-age=31536000 ; includeSubDomains
X-Frame-Options
Excellent
DENY
X-Content-Type-Options
Good
nosniff
Referrer-Policy
Missing
Not configured
Permissions-Policy
Missing
Not configured
Recommendations
- • Consider adding 'preload' to HSTS for maximum security
- • Add Content-Security-Policy header to prevent XSS attacks
- • 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