DNS Gurus
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15 Headers

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

Performance Headers

3 headers
Accept-Ranges
Performance
bytes
Connection
Performance
close
Transfer-Encoding
Performance
chunked

Caching Headers

1 headers
Last-Modified
Caching
Wed, 21 Jan 2026 05:31:44 GMT

Content Headers

1 headers
Content-Type
Content
text/html; charset=utf-8

Server Headers

1 headers
Server
Server
cloudflare

CORS Headers

0 headers
No CORS headers found

Cookies Headers

0 headers
No cookies headers found

Other Headers

9 headers
Alt-Svc
Other
h3=":443"; ma=86400
Cf-Cache-Status
Other
DYNAMIC
Cf-Ray
Other
9c1775498e28204b-IAD
Date
Other
Wed, 21 Jan 2026 14:21:27 GMT
Nel
Other
{"report_to":"heroku-nel","response_headers":["Via"],"max_age":3600,"success_fraction":0.01,"failure_fraction":0.1}
Report-To
Other
{"group":"heroku-nel","endpoints":[{"url":"https://nel.heroku.com/reports?s=G2u%2FQlZXtGFqI%2Bd5ScsQ6CfU%2FgFR93DAc5VMFnDNiZg%3D\u0026sid=1b10b0ff-8a76-4548-befa-353fc6c6c045\u0026ts=1769005287"}],"max_age":3600}
Reporting-Endpoints
Other
heroku-nel="https://nel.heroku.com/reports?s=G2u%2FQlZXtGFqI%2Bd5ScsQ6CfU%2FgFR93DAc5VMFnDNiZg%3D&sid=1b10b0ff-8a76-4548-befa-353fc6c6c045&ts=1769005287"
Server-Timing
Other
cfEdge;dur=29,cfOrigin;dur=13
Via
Other
2.0 heroku-router

Recommendations

Enable compression (gzip/brotli) to improve performance

Add Cache-Control header to optimize caching