DNS Gurus
Cached · just now
75/100 SECURITY SCORE

Detected Technologies

See all in URL Inspect 2
DigiCert logo DigiCert GeoTrust logo GeoTrust

Certificate Information

Subject
UNKNOWN={:asn1_OPENTYPE, <<19, 2, 68, 69>>}, UNKNOWN={:asn1_OPENTYPE, <<19, 6, 66, 101, 114, 108, 105, 110>>}, UNKNOWN={:asn1_OPENTYPE, <<19, 14, 67, 104, 97, 114, 108, 111, 116, 116, 101, 110, 98, 117, 114, 103>>}, 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>>}, UNKNOWN=HRA 47592, C=DE, ST=Berlin, L=Berlin, O=Posteo e.K., CN=payment.posteo.de
Issuer
C=US, O=DigiCert Inc, CN=GeoTrust EV RSA CA G2
Valid From
February 13, 2026
Valid Until
February 16, 2027 286 days
Public Key
RSA 3072 bit Adequate
Signature Algorithm
SHA256-RSA
SHA-256 Fingerprint
59:47:C0:C4:B8:9B:99:50:E4:2B:6A:70:9B:0E:0B:2F:29:0A:D9:32:C3:29:42:FB:B7:ED:B6:E9:B6:F2:D8:BB
Alternative Names
1 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

Subject Alternative Names

1 domain
payment.posteo.de