DNS Gurus
Cached · just now
75/100 SECURITY SCORE

Certificate Information

Subject
UNKNOWN={:asn1_OPENTYPE, <<19, 2, 68, 69>>}, UNKNOWN={:asn1_OPENTYPE, <<12, 18, 66, 97, 100, 101, 110, 45, 87, 195, 188, 114, 116, 116, 101, 109, 98, 101, 114, 103>>}, UNKNOWN={:asn1_OPENTYPE, "\f\tStuttgart"}, UNKNOWN={:asn1_OPENTYPE, <<12, 20, 80, 114, 105, 118, 97, 116, 101, 32, 79, 114, 103, 97, 110, 105, 122, 97, 116, 105, 111, 110>>}, C=DE, ST=Baden-Württemberg, L=Neckarsulm, UNKNOWN={:asn1_OPENTYPE, <<19, 5, 55, 52, 49, 55, 50>>}, UNKNOWN={:asn1_OPENTYPE, <<12, 19, 83, 116, 105, 102, 116, 115, 98, 101, 114, 103, 115, 116, 114, 97, 115, 115, 101, 32, 49>>}, O=Schwarz Digits IT KG, UNKNOWN=HRA 730995, CN=calculator.stackit.cloud
Issuer
C=CH, O=SwissSign AG, CN=SwissSign RSA TLS EV ICA 2022 - 1
Valid From
May 06, 2026
Valid Until
November 20, 2026 197 days
Public Key
RSA 2048 bit Adequate
Signature Algorithm
SHA256-RSA
SHA-256 Fingerprint
CB:5A:D6:49:41:41:D3:78:CC:B6:22:4E:2C:7A:87:3A:CC:B8:39:3D:DD:5D:4C:6C:06:90:61:8C:68:D2:CE:1E
Alternative Names
2 domains

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
Content-Security-Policy
Missing
Not configured Analyze
Content-Security-Policy-Report-Only
Missing
Not configured Analyze
X-Frame-Options
Missing
Not configured
X-Content-Type-Options
Missing
Not configured
Referrer-Policy
Missing
Not configured
Permissions-Policy
Missing
Not configured
Recommendations
  • • Add Strict-Transport-Security header with max-age of at least 1 year
  • • Add Content-Security-Policy header to prevent XSS attacks
  • • Add X-Frame-Options: DENY or SAMEORIGIN to prevent clickjacking
  • • Add X-Content-Type-Options: nosniff
  • • 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