DNS Gurus
Open Cached · just now
73/100 SECURITY SCORE

Certificate Information

Subject
UNKNOWN={:asn1_OPENTYPE, <<19, 2, 71, 66>>}, 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=03279013, C=GB, L=Sheffield, O=Plusnet plc, CN=www.plus.net
Issuer
C=US, O=DigiCert Inc, CN=GeoTrust EV RSA CA G2
Valid From
September 09, 2025
Valid Until
October 06, 2026 306 days
Public Key
RSA 2048 bit Adequate
Signature Algorithm
SHA256-RSA
SHA-256 Fingerprint
B8:D9:56:5F:D3:24:A3:64:62:5C:A5:FF:B0:AA:48:F3:2C:65:3B:B8:CD:36:1E:1E:99:FD:7E:D9:A5:FF:45:96
Alternative Names
24 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
Missing
Not configured
Content-Security-Policy
Missing
Not configured
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