DNS Gurus
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81/100 SECURITY SCORE

Certificate Information

Subject
C=DE, ST=Nordrhein-Westfalen, O=RWTH Aachen University, CN=modelling.rwth-aachen.de
Issuer
C=GR, O=Hellenic Academic and Research Institutions CA, CN=GEANT TLS RSA 1
Valid From
July 23, 2026
Valid Until
February 07, 2027 196 days
Public Key
RSA 2048 bit Adequate
Signature Algorithm
SHA256-RSA
SHA-256 Fingerprint
B6:43:F6:E3:C3:F3:41:6A:79:19:54:03:95:F4:97:09:40:2C:1F:14:D7:E8:5F:A3:61:7E:4E:A9:90:01:D5:EA
Alternative Names
6 domains

Security Configuration

TLS Protocols
TLS 1.2 TLS 1.3
Forward Secrecy
Supported (Modern clients use PFS)

CAA Records (Certificate Authority Authorization)

CAA Records
Configured (Restricts certificate issuance)
Current Issuer
Not Authorized (Potential misconfiguration)
Authorized CAs
harica.gr
Incident Reporting
CAA Issues
  • • CRITICAL: Current certificate issuer 'C=GR, O=Hellenic Academic and Research Institutions CA, CN=GEANT TLS RSA 1' is NOT authorized by CAA records. Authorized CAs: harica.gr
Recommendations
  • • Consider using critical flag (flags=128) for stricter CAA enforcement
  • • Consider adding 'issuewild' records to control wildcard certificate issuance