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SECURITY SCORE
Detected Technologies
Certificate Information
Subject
C=CZ, ST=Praha, Hlavní město, O=T-Mobile Czech Republic a.s., CN=*.t-mobile.cz
Issuer
C=CA, O=Entrust Limited, CN=Entrust OV TLS Issuing RSA CA 2
Valid From
March 23, 2026
Valid Until
October 07, 2026
63 days
Public Key
RSA
3072 bit
Adequate
Signature Algorithm
SHA256-RSA
SHA-256 Fingerprint
84:3F:CF:86:CB:B2:5F:00:1D:CA:F6:0D:66:AA:61:AD:E0:B0:82:08:FD:86:19:5E:5C:7B:EA:00:95:64:50:74
Alternative Names
Security Configuration
TLS Protocols
TLS 1.2
TLS 1.3
Forward Secrecy
Supported
(Modern clients use PFS)
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