DNS Gurus
Cached · just now
85/100 SECURITY SCORE

Certificate Information

Subject
UNKNOWN=HRB 5762, UNKNOWN={:asn1_OPENTYPE, <<19, 2, 68, 69>>}, UNKNOWN={:asn1_OPENTYPE, <<19, 20, 80, 114, 105, 118, 97, 116, 101, 32, 79, 114, 103, 97, 110, 105, 122, 97, 116, 105, 111, 110>>}, C=DE, ST=Rheinland-Pfalz, O=United Internet AG, CN=www.united-internet.de
Issuer
C=GB, ST=Greater Manchester, L=Salford, O=Sectigo Limited, CN=Sectigo RSA Extended Validation Secure Server CA
Valid From
March 28, 2025
Valid Until
March 28, 2026 57 days
Public Key
RSA 4096 bit Strong
Signature Algorithm
SHA256-RSA
SHA-256 Fingerprint
26:3E:A8:5E:86:DE:3A:F3:36:2E:8D:1C:8A:85:23:3D:1E:DE:AA:C2:10:E2:F7:77:19:2B:62:68:B2:5E:A1:36
Alternative Names
4 domains

Security Configuration

TLS Protocols
TLS 1.2
Forward Secrecy
Limited (Check cipher configuration)
Warnings
  • • TLS 1.3 is not supported (recommended)

HTTP Security Headers

Status
Strict-Transport-Security
Present
max-age=31536000
Content-Security-Policy
Weak
frame-ancestors
X-Frame-Options
Missing
Not configured
X-Content-Type-Options
Good
nosniff
Referrer-Policy
Good
strict-origin-when-cross-origin
Permissions-Policy
Present
geolocation=(), midi=(), camera=(), usb=(), magnetometer=(), accelerometer=(), gyroscope=(), microphone=()
Recommendations
  • • Increase HSTS max-age to at least 1 year and add includeSubDomains
  • • Significantly strengthen CSP directives
  • • Add X-Frame-Options: DENY or SAMEORIGIN to prevent clickjacking

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

4 domains
united-internet.de www.united-internet.de

Other domains in certificate

mailandmediagmbh.de www.mailandmediagmbh.de