DNS Gurus
Cached · just now
20 Headers

HTTP Security Headers

Status
Strict-Transport-Security
Excellent
max-age=31536000; includeSubDomains; preload
Content-Security-Policy
Basic
img-src; default-src; script-src; +8 more
X-Frame-Options
Good
SAMEORIGIN
X-Content-Type-Options
Good
nosniff
Referrer-Policy
Missing
Not configured
Permissions-Policy
Missing
Not configured
Recommendations
  • • Improve CSP by adding more specific directives and removing 'unsafe-inline'
  • • 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
Accept-Encoding

Caching Headers

1 headers
Etag
Caching
W/"7438-3lilBwNkLT0KJlQygJeExQFgGr4"

Content Headers

2 headers
Content-Length
Content
29752
Content-Type
Content
text/html; charset=utf-8

Server Headers

2 headers
Server
Server
Heroku
X-Powered-By
Server
Express

CORS Headers

0 headers
No CORS headers found

Cookies Headers

0 headers
No cookies headers found

Other Headers

8 headers
Date
Other
Thu, 22 Jan 2026 18:38:52 GMT
Nel
Other
{"report_to":"heroku-nel","response_headers":["Via"],"max_age":3600,"success_fraction":0.01,"failure_fraction":0.1}
Ratelimit-Limit
Other
100
Ratelimit-Remaining
Other
99
Ratelimit-Reset
Other
44
Report-To
Other
{"group":"heroku-nel","endpoints":[{"url":"https://nel.heroku.com/reports?s=Y5ob9pWKgfCESKNy6uOcHm3w9EEby761FKN%2BHa1yFL4%3D\u0026sid=67ff5de4-ad2b-4112-9289-cf96be89efed\u0026ts=1769107132"}],"max_age":3600}
Reporting-Endpoints
Other
heroku-nel="https://nel.heroku.com/reports?s=Y5ob9pWKgfCESKNy6uOcHm3w9EEby761FKN%2BHa1yFL4%3D&sid=67ff5de4-ad2b-4112-9289-cf96be89efed&ts=1769107132"
Via
Other
1.1 heroku-router

Recommendations

Enable compression (gzip/brotli) to improve performance

Add Cache-Control header to optimize caching

Consider removing X-Powered-By header to hide server technology