DNS Gurus
Cached · just now
93/100 SECURITY SCORE

Detected Technologies

See all in URL Inspect 6
Let's Encrypt logo Let's Encrypt Google Fonts logo Google Fonts Headway logo Headway Plausible Analytics logo Plausible Analytics Sentry logo Sentry Zapier logo Zapier

Certificate Information

Subject
CN=labs.sublime.security
Issuer
C=US, O=Let's Encrypt, CN=YR1
Valid From
July 16, 2026
Valid Until
October 14, 2026 71 days
Public Key
RSA 2048 bit Adequate
Signature Algorithm
SHA256-RSA
SHA-256 Fingerprint
05:2F:81:98:2F:1E:0D:B7:72:82:56:62:77:52:8D:E7:60:1F:A8:95:69:ED:D2:4D:A9:50:43:D2:8E:1F:D5:A1
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
Excellent
max-age=31536000; includeSubDomains; preload
Content-Security-Policy
Missing
Not configured Analyze
Content-Security-Policy-Report-Only
Google Fonts logo
Basic
default-src; script-src; style-src; +10 more Analyze
X-Frame-Options
Good
SAMEORIGIN
X-Content-Type-Options
Good
nosniff
Referrer-Policy
Good
no-referrer
Permissions-Policy
Present
microphone=(), geolocation=()
Recommendations
  • • Add Content-Security-Policy header to prevent XSS attacks

CAA Records (Certificate Authority Authorization)

CAA Records
Configured (Restricts certificate issuance)
Current Issuer
Authorized (Matches CAA policy)
Authorized CAs
pki.goog sectigo.com globalsign.com letsencrypt.org
Recommendations
  • • Consider using critical flag (flags=128) for stricter CAA enforcement
  • • You have authorized 4 CAs - consider limiting to only the CAs you actively use
  • • Consider adding 'iodef' records to receive notifications about unauthorized certificate issuance attempts
  • • Consider adding 'issuewild' records to control wildcard certificate issuance

Subject Alternative Names

1 domain
labs.sublime.security