DNS Gurus
Cached · just now
91/100 SECURITY SCORE

Detected Technologies

See all in URL Inspect 2
Google Trust logo Google Trust Fern logo Fern

Certificate Information

Subject
CN=docs.merge.dev
Issuer
C=US, O=Google Trust Services, CN=WE1
Valid From
September 14, 2026
Valid Until
December 13, 2026 67 days
Public Key
ECDSA 256 bit (P-256) Adequate
Signature Algorithm
ECDSA-SHA256
SHA-256 Fingerprint
8F:27:65:D7:D6:D9:F4:04:E0:23:23:EA:75:61:58:46:D0:4F:AD:E5:1A:89:80:D1:98:67:68:51:57:C9:01:43
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
Present
max-age=15552000; includeSubDomains; preload
Content-Security-Policy
Fern logo
Basic
default-src; script-src; style-src; +9 more Analyze
Content-Security-Policy-Report-Only
Missing
Not configured Analyze
X-Frame-Options
Good
SAMEORIGIN
X-Content-Type-Options
Good
nosniff
Referrer-Policy
Good
strict-origin-when-cross-origin
Permissions-Policy
Present
camera=(self), microphone=(self), geolocation=()
Recommendations
  • • Increase HSTS max-age to at least 1 year and add includeSubDomains
  • • Improve CSP by adding more specific directives and removing 'unsafe-inline'

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
docs.merge.dev