DNS Gurus
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13 Headers

HTTP Security Headers

Status
Strict-Transport-Security
Good
max-age=63072000; includeSubDomains
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
  • • Consider adding 'preload' to HSTS for maximum security
  • • 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

2 headers
Connection
Performance
close
Vary
Performance
Origin

Caching Headers

1 headers
Cache-Control
Caching
no-cache

Content Headers

1 headers
Content-Length
Content
0

Server Headers

2 headers
Server
Server
Heroku
X-Runtime
Server
0.002798

CORS Headers

0 headers
No CORS headers found

Cookies Headers

0 headers
No cookies headers found

Other Headers

6 headers
Date
Other
Wed, 14 Jan 2026 06:16:23 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=QwI%2BPGIwKOk%2BLdrVj%2B%2FFUkHU4zFPwkp2%2BaTXk6ckx%2F0%3D\u0026sid=67ff5de4-ad2b-4112-9289-cf96be89efed\u0026ts=1768371383"}],"max_age":3600}
Reporting-Endpoints
Other
heroku-nel="https://nel.heroku.com/reports?s=QwI%2BPGIwKOk%2BLdrVj%2B%2FFUkHU4zFPwkp2%2BaTXk6ckx%2F0%3D&sid=67ff5de4-ad2b-4112-9289-cf96be89efed&ts=1768371383"
Via
Other
1.1 heroku-router
X-Request-Id
Other
319cbaf6-06dc-9407-b0c1-5dcc343dde1a

Recommendations

Enable compression (gzip/brotli) to improve performance