DNS Gurus
Cached · just now
92/100 SECURITY SCORE

Certificate Information

Subject
C=SG, L=Singapore, O=NTUC FIRST CAMPUS LIMITED, CN=ntucfirstcampus.com
Issuer
C=US, O=DigiCert Inc, CN=DigiCert Global G3 TLS ECC SHA384 2020 CA1
Valid From
October 01, 2025
Valid Until
October 01, 2026 250 days
Public Key
ECDSA 256 bit (P-256) Adequate
Signature Algorithm
ECDSA-SHA384
SHA-256 Fingerprint
9B:4B:B3:39:21:04:CE:7A:7A:08:19:DB:3B:68:E4:4A:62:D9:5B:4B:AB:5C:FB:A9:E0:21:9E:78:DD:26:20:01
Alternative Names
24 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
Excellent
max-age=31536000; includeSubDomains; preload
Content-Security-Policy
Basic
default-src; style-src; script-src; +10 more
X-Frame-Options
Present
ALLOW-FROM https://parent.skool.sg; DENY; SAMEORIGIN
X-Content-Type-Options
Good
nosniff
Referrer-Policy
Good
no-referrer
Permissions-Policy
Missing
Not configured
Recommendations
  • • Improve CSP by adding more specific directives and removing 'unsafe-inline'
  • • 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