Open
Cached
·
just now
90/100
SECURITY SCORE
Detected Technologies
Certificate Information
Subject
C=DE, ST=Rheinland-Pfalz, L=Montabaur, O=1&1 Mail & Media GmbH, CN=*.gmx.at
Issuer
C=DE, O=Deutsche Telekom Security GmbH, CN=Telekom Security ServerID OV Class 2 CA
Valid From
March 11, 2026
Valid Until
September 24, 2026
55 days
Public Key
RSA
3072 bit
Adequate
Signature Algorithm
SHA256-RSA
SHA-256 Fingerprint
A6:7C:E9:A7:97:1A:63:76:06:35:86:59:CB:5E:B2:BE:59:86:A4:76:A4:A6:16:8C:9F:AE:39:E1:DB:6F:6E:5E
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=31536000; includeSubdomains; preload
X-Frame-Options
Excellent
DENY
X-Content-Type-Options
Good
nosniff
Referrer-Policy
Good
strict-origin-when-cross-origin
Permissions-Policy
Present
microphone=(), camera=(), geolocation=(); +1 more
Recommendations
- • Increase HSTS max-age to at least 1 year and add includeSubDomains
- • Improve CSP by adding more specific directives and removing 'unsafe-inline'
CAA Records (Certificate Authority Authorization)
CAA Records
Configured
(Restricts certificate issuance)
Current Issuer
Not Authorized
(Potential misconfiguration)
Authorized CAs
Wildcard CAs
CAA Issues
- • CRITICAL: Current certificate issuer 'C=DE, O=Deutsche Telekom Security GmbH, CN=Telekom Security ServerID OV Class 2 CA' is NOT authorized by CAA records. Authorized CAs: telesec.de, Digicert.com, sectigo.com
Recommendations
- • Consider using critical flag (flags=128) for stricter CAA enforcement
- • Consider adding 'iodef' records to receive notifications about unauthorized certificate issuance attempts